God I'd love me a Panda Exhibit (just not the one in the Balls of Fury movie).
Sadly, I think you're expectations are a little to high. Not shooting you down or disagreeing with you, just trying to be realistic here. They do need to make quite a few substantial announcements after what happened in 2011, but I just don't see them making all these confirmations in August.
Let's go back to the D23 P&R segment in 2009 and what they -announced/+presented there:
-Fantasyland Expansion at MK
-Star Tours 2.0 for DHS and DLR
+Cars land artwork and CGI clip of ride segment
-Toy Story Playland at HKDL
+Aulani Artwork
+Disney Dream Cruise Ship progress
Since that was the Expo with real substantial announcements, here's what I'm expecting for this year's P&R Expo presentation (in no particular order):
-Monstropolis area in DCA with the Door Coaster
-DHS makeover
-Soarin The World
+Avatarland artwork/details
+Final updates on SDMT/PFTH
-Details/updates on Shanghai DL resort plans
+Lastly, artwork/mockups on Kitchen Calamity (Ratatouille ride and area at WDSP)
Again, just trying to be realistic and lower expectations (at least from the WDW fan side/perspective). Do I want them to announce those projects you have listed above for WDW? Yes, but I just don't see that happening. We will see I guess. D23 can't come soon enough!