<Table> <Tr> <Th> Legend: </Th> <Td> Discontinued </Td> <Td> Current </Td> </Tr> </Table> <Tr> <Th> Legend: </Th> <Td> Discontinued </Td> <Td> Current </Td> </Tr> <Table> <Tr> <Th_colspan="2"> Model </Th> <Th_colspan="2"> iPad Pro (1st generation) </Th> <Th_colspan="2"> iPad Pro (2nd generation) </Th> </Tr> <Tr> <Th_colspan="2"> Screen Size </Th> <Th> 12.9 - inch </Th> <Th> 9.7 - inch </Th> <Th> 12.9 - inch </Th> <Th> 10.5 - inch </Th> </Tr> <Tr> <Th_colspan="2"> Image </Th> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Th_colspan="2"> Initial operating system </Th> <Td> iOS 9.1 </Td> <Td> iOS 9.3 </Td> <Td> iOS 10.3. 2 </Td> <Td> iOS 10.3. 2 </Td> </Tr> <Tr> <Th_colspan="2"> Highest supported operating system </Th> <Td_colspan="4"> iOS 11.3 <P> </P> </Td> </Tr> <Tr> <Th_colspan="2"> Model Number </Th> <Td> A1584 (Wi - Fi) <P> A1652 (Wi - Fi + Cellular) </P> </Td> <Td> A1673 (Wi - Fi) <P> A1674 or A1675 (Wi - Fi + Cellular) </P> </Td> <Td> A1670 (Wi - Fi) <P> A1671 (Wi - Fi + Cellular) </P> </Td> <Td> A1701 (Wi - Fi) <P> A1709 (Wi - Fi + Cellular) </P> </Td> </Tr> <Tr> <Th_colspan="2"> Announcement date </Th> <Td> September 9, 2015 </Td> <Td> March 21, 2016 </Td> <Td_colspan="2"> June 5, 2017 </Td> </Tr> <Tr> <Th_colspan="2"> Release date </Th> <Td> November 11, 2015 </Td> <Td> March 31, 2016 </Td> <Td_colspan="2"> June 13, 2017 </Td> </Tr> <Tr> <Th_colspan="2"> Launch price </Th> <Td> Wi - Fi models: <Dl> <Dd> 32 GB--US $799 </Dd> <Dd> 128 GB--US $949 </Dd> <Dd> 256 GB--US $1,099 </Dd> </Dl> <P> Wi - Fi + Cellular models: </P> <Dl> <Dd> 128 GB--US $1,079 </Dd> <Dd> 256 GB--US $1,229 </Dd> </Dl> </Td> <Td> Wi - Fi models: <Dl> <Dd> 32 GB--US $599 </Dd> <Dd> 128 GB--US $749 </Dd> <Dd> 256 GB--US $899 </Dd> </Dl> <P> Wi - Fi + Cellular models: </P> <Dl> <Dd> 32 GB--US $729 </Dd> <Dd> 128 GB--US $879 </Dd> <Dd> 256 GB--US $1,029 </Dd> </Dl> </Td> <Td> Wi - Fi models: <Dl> <Dd> 64 GB--US $799 </Dd> <Dd> 256 GB--US $899 </Dd> <Dd> 512 GB--US $1,099 </Dd> </Dl> <P> Wi - Fi + Cellular models: </P> <Dl> <Dd> 64 GB--US $929 </Dd> <Dd> 256 GB--US $1,029 </Dd> <Dd> 512 GB--US $1,229 </Dd> </Dl> </Td> <Td> Wi - Fi models: <Dl> <Dd> 64 GB--US $649 </Dd> <Dd> 256 GB--US $749 </Dd> <Dd> 512 GB--US $949 </Dd> </Dl> <P> Wi - Fi + Cellular models: </P> <Dl> <Dd> 64 GB--US $779 </Dd> <Dd> 256 GB--US $879 </Dd> <Dd> 512 GB--US $1,079 </Dd> </Dl> </Td> </Tr> <Tr> <Th_colspan="2"> SoC </Th> <Td_colspan="2"> Apple A9X </Td> <Td_colspan="2"> Apple A10X Fusion </Td> </Tr> <Tr> <Th_colspan="2"> Motion coprocessor </Th> <Td_colspan="2"> Apple M9 </Td> <Td_colspan="2"> Apple M10 </Td> </Tr> <Tr> <Th_colspan="2"> CPU </Th> <Td_colspan="1"> 2.26 GHz dual - core Apple Twister </Td> <Td_colspan="1"> 2.26 GHz dual - core Apple Twister (underclocked to 2.16 GHz) </Td> <Td_colspan="2"> ~ 2.36 GHz hexa - core Apple Fusion (3 × Hurricane + 3 × Zephyr) </Td> </Tr> <Tr> <Th_colspan="2"> GPU </Th> <Td_colspan="4"> 12 - core PowerVR Series 7XT </Td> </Tr> <Tr> <Th_colspan="2"> Memory </Th> <Td> 4 GB LPDDR4 RAM </Td> <Td> 2 GB LPDDR4 RAM </Td> <Td_colspan="2"> 4GB LPDDR4 RAM </Td> </Tr> <Tr> <Th_colspan="2"> Display </Th> <Td> 12.9 inches (330 mm) (diagonal) multi-touch display with LED backlighting and an oleophobic, fingerprint and scratch - resistant coating, Fully laminated display, Antireflective coating </Td> <Td> 9.7 inches (250 mm) (diagonal) multi-touch display with LED backlighting and an oleophobic and scratch - resistant coating, Wide color display, True Tone display, <P> Fully laminated display, Antireflective coating </P> </Td> <Td> 12.9 inches (330 mm) (diagonal) multi-touch display with LED backlighting and an oleophobic and scratch - resistant coating, Wide color display, True Tone display, <P> Fully laminated display, Antireflective coating, ProMotion display (120 Hertz refresh rate) </P> </Td> <Td> 10.5 inches (270 mm) (diagonal) multi-touch display with LED backlighting and an oleophobic and scratch - resistant coating, Wide color display, True Tone display, <P> Fully laminated display, Antireflective coating, ProMotion display (120 Hertz refresh rate) </P> </Td> </Tr> <Tr> <Td> 2732 - by - 2048 pixel resolution 264 ppi (Retina Display) </Td> <Td> 2048 - by - 1536 pixel resolution at 264 ppi (Retina Display) </Td> <Td> 2732 - by - 2048 pixel resolution at 264 ppi (Retina Display) </Td> <Td> 2224 - by - 1668 pixel resolution at 264 ppi (Retina Display) </Td> </Tr> <Tr> <Th> Camera </Th> <Th> iSight </Th> <Td> 8 MP, ƒ / 2.4 aperture, HDR for photos, Autofocus, five - element lens, Hybrid IR filter, <P> Backside illumination, Face Detection, Exposure control, Panorama (up to 43 MP), Burst mode, Tap to focus, Photo geotagging, Timer mode, Video Recording, 1080p video recording (30 fps), Slo - mo video support for 720p at 120 fps, Time - lapse video, Video image stabilization, 3 × digital zoom, Video geotagging </P> </Td> <Td> 12 MP, ƒ / 2.2 aperture, Auto HDR for photos, five - element lens, Hybrid IR filter, Backside illumination, Autofocus with Focus Pixels, Improved face detection, Exposure control, Panorama (up to 63 MP), Burst mode, <P> Tap to focus, Photo geotagging, Timer mode, Video Recording, Cinematic video stabilization, 4K video recording (30 fps), 1080p HD video recording at 30 fps or 60 fps, Slo - mo video support for 1080p at 120 fps and 720p at 240 fps, Time - lapse video, 3 × digital zoom, Live Photos, True Tone LED flash, Sapphire crystal lens cover, Improved local tone mapping, Improved noise reduction, Video geotagging </P> </Td> <Td_colspan="2"> 12 MP, ƒ / 1.8 aperture, Auto HDR for photos, Autofocus with Focus Pixels, six - element lens, Hybrid IR filter, Backside illumination, Improved face detection, Exposure control, Panorama (up to 63 MP), Burst mode, Tap to focus, <P> Photo and video geotagging, Timer mode, Video Recording, Cinematic video stabilization, 4K video recording (30 fps), 1080p HD video recording at 30fps or 60fps, Slo - mo video support for 1080p at 120 fps and 720p at 240 fps, Time - lapse video, 3 × digital zoom, True Tone LED flash, Sapphire crystal lens cover, Improved local tone mapping, Improved noise reduction </P> </Td> </Tr> <Tr> <Th> FaceTime </Th> <Td> 1.2 MP, ƒ / 2.2 aperture, 720p HD video recording, Auto HDR for photos and videos, Backside illumination, Exposure control, Burst mode, Timer mode and Face Detection </Td> <Td> 5 MP, ƒ / 2.2 aperture, 720p HD video recording, Retina Flash, Auto HDR for photos and videos, Backside illumination, Exposure control, Burst mode, Timer mode and Face Detection </Td> <Td_colspan="2"> 7 MP ƒ / 2.2 aperture, 1080p HD video recording, Auto HDR for photos and videos, Backside illumination, Exposure control, Burst mode, Timer mode and Face Detection </Td> </Tr> <Tr> <Th> Wireless </Th> <Th> Wi - Fi </Th> <Td_colspan="4"> Wi - Fi (802.11 a / b / g / n / ac); dual channel (2.4 GHz and 5 GHz); HT80 with MIMO <P> Bluetooth 4.2 technology </P> </Td> </Tr> <Tr> <Th> Wi - Fi + Cellular </Th> <Td> Above plus: <P> UMTS / HSPA / HSPA+ / DC - HSDPA (850, 900, 1700 / 2100, 1900, 2100 MHz); GSM / EDGE (850, 900, 1800, 1900 MHz), CDMA EV - DO Rev. A and Rev. B (800, 1900 MHz), LTE (Bands 1, 2, 3, 4, 5, 7, 8, 13, 17, 18, 19, 20, 25, 26, 28, 29, 38, 39, 40, 41), Data only, Includes Apple SIM (U.S., UK, and Germany only) </P> <Ul> <Li> </Li> </Ul> </Td> <Td_colspan="3"> Above plus: <P> UMTS / HSPA / HSPA+ / DC - HSDPA (850, 900, 1700 / 2100, 1900, 2100 MHz); GSM / EDGE (850, 900, 1800, 1900 MHz), CDMA EV - DO Rev. A and Rev. B (800, 1900 MHz), LTE Advanced (Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 27, 28, 29, 30, 38, 39, 40, 41), Data only, Embedded Apple SIM </P> </Td> </Tr> <Tr> <Th> Geolocation </Th> <Th> Wi - Fi </Th> <Td_colspan="4"> <Ul> <Li> Wi - Fi </Li> <Li> Apple location databases </Li> <Li> iBeacon microlocation </Li> </Ul> </Td> </Tr> <Tr> <Th> Wi - Fi + Cellular </Th> <Td_colspan="4"> <P> Above plus: </P> <Ul> <Li> Assisted GPS </Li> <Li> GLONASS </Li> <Li> Cellular network </Li> </Ul> </Td> </Tr> <Tr> <Th_colspan="2"> Environmental sensors </Th> <Td_colspan="4"> <Ul> <Li> Accelerometer </Li> <Li> Gyroscope </Li> <Li> Ambient light sensor </Li> <Li> Magnetometer </Li> <Li> Barometer </Li> </Ul> </Td> </Tr> <Tr> <Th_colspan="2"> Battery </Th> <Td> 3.77 V 38.8 W h (10307 mA h) rechargeable lithium ‐ polymer battery </Td> <Td> 3.82 V 27.91 W h (7306mA h) rechargeable lithium ‐ polymer battery </Td> <Td> 3.77 V 41 W h (10875 mA h) rechargeable lithium ‐ polymer battery </Td> <Td> 3.77 V 30.8 W h (8134 mA h) rechargeable lithium ‐ polymer battery </Td> </Tr> <Tr> <Th_colspan="2"> Dimensions </Th> <Td> 305.7 mm (12.04 in) (h) <P> 220.6 mm (8.69 in) (w) </P> <P> 6.9 mm (0.27 in) (d) </P> </Td> <Td> 240 mm (9.4 in) (h) <P> 169.5 mm (6.67 in) (w) </P> <P> 6.1 mm (0.24 in) (d) </P> </Td> <Td> 305.7 mm (12.04 in) (h) <P> 220.6 mm (8.69 in) (w) </P> <P> 6.9 mm (0.27 in) (d) </P> </Td> <Td> 250.6 mm (9.87 in) (h) <P> 174.1 mm (6.85 in) (w) </P> <P> 6.1 mm (0.24 in) (d) </P> </Td> </Tr> <Tr> <Th_colspan="2"> Weight </Th> <Td> Wi - Fi model: 710 g (1.57 lb) <P> Wi - Fi + Cellular model: 720 g (1.59 lb) </P> </Td> <Td> Wi - Fi: 437 g (0.963 lb) <P> Wi - Fi + Cellular: 444 g (0.979 lb) </P> </Td> <Td> Wi - Fi model: 677 g (1.493 lb) <P> Wi - Fi + Cellular model: 692 g (1.526 lb) </P> </Td> <Td> Wi - Fi: 469 g (1.034 lb) <P> Wi - Fi + Cellular 477 g (1.052 lb) </P> </Td> </Tr> <Tr> <Th_colspan="2"> Mechanical keys </Th> <Td_colspan="4"> <Ul> <Li> Home and sleep buttons </Li> <Li> Volume control </Li> <Li> Omits variable function switch like the iPad Air 2 and iPad Mini 4 </Li> </Ul> </Td> </Tr> <Tr> <Th_colspan="2"> Connectors </Th> <Td_colspan="4"> <Ul> <Li> Lightning Connector </Li> <Li> Apple Smart Connector </Li> <Li> 3.5 mm audio jack connector </Li> </Ul> </Td> </Tr> <Tr> <Th_colspan="2"> Speakers </Th> <Td_colspan="4"> Quad stereo </Td> </Tr> <Tr> <Th_colspan="2"> Greenhouse gas emissions </Th> <Td> 240 kg CO e </Td> <Td> 210 kg CO e </Td> <Td> 122 kg CO e </Td> <Td> 100 kg CO e </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Model </Th> <Th_colspan="2"> iPad Pro (1st generation) </Th> <Th_colspan="2"> iPad Pro (2nd generation) </Th> </Tr>

When did the ipad pro 2nd generation come out