As it does every so often, Amazon recently updated and revamped its line of Fire tablets to include upgraded models and a somewhat simplified naming scheme. The new models abandon the "Kindle" branding and are now simply known as Fire HDX 8.9, Fire HD 7, and Fire HD 6. To flesh out the lineup, Amazon still sells a Fire HDX and a Fire HD Kids Edition, which is really a Fire HD 7 or 6 with a protective case, accidental damage protection, and a collection of pre-loaded apps targeted at a younger audience.
The model we're looking at here is the Fire HD 7 starting at $139. Technically it's a new addition to Amazon's tablet family, though that's by name only -- it replaces the 2013 Kindle Fire HD and is a fourth generation product...
Amazon Fire HD 7 Tablet (2014) Review

Marco Chiappetta
Marco's interest in computing and technology dates all the way back to his early childhood. Even before being exposed to the Commodore P.E.T. and later the Commodore 64 in the early ‘80s, he was interested in electricity and electronics, and he still has the modded AFX cars and shop-worn soldering irons to prove it. Once he got his hands on his own Commodore 64, however, computing became Marco's passion. Throughout his academic and professional lives, Marco has worked with virtually every major platform from the TRS-80 and Amiga, to today's high end, multi-core servers. Over the years, he has worked in many fields related to technology and computing, including system design, assembly and sales, professional quality assurance testing, and technical writing. In addition to being the Managing Editor here at HotHardware for close to 15 years, Marco is also a freelance writer whose work has been published in a number of PC and technology related print publications and he is a regular fixture on HotHardware’s own Two and a Half Geeks webcast. - Contact: marco(at)hothardware(dot)com