Any word on when the Q4 2009 schedule of (anticipated) release dates for upcoming mods will be made available?
Bump.
Pretty simple - when Tulach does it.
I know Penny Arcade wrapped up recently, so who knows what's on his plate.
It's possible we'll get it with this month's RPGA report on Friday.
We do have a draft Q4 release schedule, and it is currently being reviewed. Exactly when it will get published is not something that any of us can tell you, because it's out of our control, but I don't think "soon" is an inappropriate answer. 
Assuming it stays true to form, the RPGA report for this month's Dragon will only include the September releases, since it's the September issue of Dragon.
Will the 4th quarter release dates include the backed up adventures from 3rd quarter (and second) or are you planning on just delaying some of the new adventures coming out?
Will the 4th quarter release dates include the backed up adventures from 3rd quarter (and second) or are you planning on just delaying some of the new adventures coming out?
Neither. The new adventures will come out according to the 4th Quarter release schedule (which Chris Tulach has added to his blog -- search for wotc_tulach). Adventures that previously missed their release dates just get added to the system as soon as they're ready. Late adventures don't "take up" new slots on the release schedule; they get released as fast as we can release them, which is obviously a function of a lot of different things. But we don't rearrange the upcoming release schedule to accommodate them.
Ooo...double length paragon tier module! Sweet.