Update: The Yaesu FT-891 is the smallest at lightest 100W HF transceiver ever built, at 155x52x218mm and 1.9Kg. Unfortunately the 2A current draw on standby makes it unsuited for truly portable operations.
Among other features worth mentioning would be the 3kHz wide roofing filter (yes, at the 69MHz IF) and the USB port that supports CAT, PTT keying and RTTY data.
Yaesu FT-891 is on public display at Dayton 2016.
It covers 30kHz to 56MHz on receive and transmits in the amateur bands from 160m to 6m with 100W output, has a 69.450MHz 1st IF and a 32-bit DSP, which points to a very similar architecture with the Yaesu FT-991. Yaesu has learned from past mistakes and the FT-891 has a large visible display. A bit more info in the original FT-891 post.
Seems to be the FT-857 replacement and by the looks of things, we might expect a FT-817 replacement named FT-791.
There is also a companion tuner being launched at the same time, called the Yaesu FC-50.
Images by KE9V.