<P> On September 25, 2013, the Kindle Fire HD was upgraded as the third generation Fire, priced at US $139, and the Kindle Fire HDX was introduced . The Kindle Fire HDX had an improved graphics engine, double the memory, and triple the processor speed of the previous model . The 7 - inch and 8.99 - inch versions were introduced at US $229 and US $379 respectively . </P> <P> In September 2014, the Fire HDX 8.9 and the Fire HD were upgraded to the fourth generation of Fire tablets, removing the "Kindle" adjective in the naming scheme . There was also the Fire HD 6 that has a six - inch screen with a quad - core processor priced at US $99 . </P> <P> In September 2015, Amazon announced the release of the Fire 7, priced at US $49.99 for the 8GB version that displays advertisements on the lock screen . As of March 2016 it was the lowest - priced Amazon tablet . In June 2016, its price was dropped briefly to US $39.99 . This fifth generation tablet includes for the first time a micro SD card slot for extra storage . </P> <P> In September 2016, Amazon announced the release of the Fire HD 8 which includes the virtual assistant Alexa, priced at US $89.99 . Fortune reported that, "As with most of Amazon's devices, the aim isn't to make money off of the hardware but instead to sell digital content such as books, movies, and TV shows to users". </P>

When did the amazon fire 7 come out