I can tell you what I saw although there’s no guarantee any of these features won’t get pulled at the last minute before release.
Big changes are lots of RTA options including some really cool RTA stuff in the south area, a couple of different expanders, Sennheiser wireless integration (like existing Shure) and the ability to name your card slots so you don’t have to try and remember what card is in what slot.
There are still a couple of minor issues that I’m not at liberty to discuss but nothing earth shattering.
As for release date I’d say from what I saw if the developers were left alone in a darkened room for a week it would be done but we all know it never works like that.