1) Hopefully they finish what they're currently working on on X.org, then put X.org into maintenance mode and all devs move over to work solely on Wayland to get it done sooner. It's been developed since 2008, that's quite some time already.
2) Hopefully the (Wayland) video presentations from XDC will have good audio, so far the audio has typically been bad (while the video quality was better).