So, I've been able to find a bit more information on the new HEOS items...no thanks to Denon customer service.
The new soundbar will be called the HEOS Bar. It appears that the HEOS Bar will be released around the same time as the HEOS AVR, specifically one source lists the release date as 4/14/17. It will have 9 drivers and 4 HDMI ports. Audio format support for Dolby TrueHD and DTS-HD Master Audio. Also, it will be sold independently from the new subwoofer. It is safe to say that this is meant to be a competitor to the Sonos Playbar which also has 9 drivers. Price appears to be $999 according to one source but I would be surprised if it is higher than $699.
The new subwoofer will be called the HEOS Subwoofer. According to the specs I have been able to find, it will have dual 5 1/4 in drives. This is the same as the current subwoofer that comes with the HEOS HomeCinema. I am not certain these specs are accurate however, as in pictures, the HEOS Subwoofer is much larger than the one that comes with the HomeCinema. No price info on this one yet.
Attached are a few pictures of each for your viewing pleasure.