Amazon has informed me that, along with the 1st-gen Fire TV and 1st-gen Fire TV Stick from 2014, the 2nd-gen Fire TV box released in 2015 will also not be receiving the new Fire TV interace. I mistakenly thought 2015 and newer devices would receive the new interface update, and incorrectly stated so previously, but it turns out that the much-loved Fire TV 2 is just behind the cut-off of 2016 and newer models.
The 2nd-gen Fire TV was released in October of 2015 and quickly became the most sought after model by being the first Fire TV to support 4K video and having exceptional performance that wasn’t surpassed by a newer Fire TV model until the release of the 2nd-gen Fire TV Cube. Many home theater enthusiasts have held onto the 2nd-gen Fire TV for being the last model to support features like integrated Ethernet, a microSD card slot, and a full-sized USB port.
The 2nd-gen Fire TV debuted with the original Fire TV interface that had a vertical navigation menu along the left side. About a year later, it was updated to the current interface, along with the 1st-gen Fire TV and Fire TV Stick. Had Amazon decided to update the 2nd-gen Fire TV to the new 2020/2021 interface, it would have been the only Fire TV model to receive two interface overhauls. However, it seems that Amazon has decided that one interface update is enough, making the 2nd-gen Fire TV Stick, which debuted in 2016 alongside the current interface, the oldest device to receive the latest interface update.
This news doesn’t necessarily mean that all support and updates are stopping for the 2nd-gen Fire TV. The 2nd-gen Fire TV and older Fire TV models are still receiving software updates as recently as this month. It just means that the current interface will remain on the device indefinitely.