Firefly was just about the only truly useful and unique feature on the Fire Phone, and it is coming soon to Amazon's Fire tablets.
Android Police reports that the sultan of Seattle is in the middle of pushing out a firmware update to Fire tablets in the US, UK, and Germany which adds Firefly.
Soon Fire tablet owners will be able to use their tablet's camera to identify 245,000 movies and TV episodes, 160 live TV channels, and 35 million songs. They'll be able to take a photo of an actor, barcode, or cover image, and use IMDb for X-Ray to get more information about a movie or TV show.
I don't have any first-hand reports yet so there's no way to tell just how many Firefly features will be added to the Fire tablets, but on the Fire Phone Firefly recognizes text (email and phone numbers) and can pull up nutritional info based on a photo taken of a food item. It also can use the Fire Phone's mike to recognize song lyrics.
Naturally, a camera and microphone is required, and so Firefly won't be available on all Fire tablets. My tablet, for example, lacks a camera but has recently received an update. But it is already available on the new Fire HDX 8.9, and has been for some time.
started rolling out the update a couple days ago (that's when I got the update), and will be pushing it to Fire tablets over the next few weeks.
Update: A reader has reported that his Fire HD6 tablet also got an update a couple days ago which did not add Firefly. This raises doubts whether this report is true. Thanks, Tom!