Well, I see many upgrades and fixes in the link. It seems some of those fixes would be appropriate for 1809 for such things as Edge not being able to reach a local IP and the Black Screens which are being reported on public builds.
The recent apps popups from the search icon already seem to be partially available in 1809. The first time I saw that it surprised me.
The ability to use Win32 utilities in Windows Mixed Reality would be a help if you needed to accomplish some task while in the Mixed Reality environment. If the headsets were more comfortable you could almost use them all the time. I suppose the headsets that not as cumbersome as the one I have, would benefit greatly.
Someone was saying this build was a Skip Ahead Build but maybe a real one will come out soon. The other forum was also saying the Skip Ahead program was now closed to new arrivals.