Two points!
1). Lurker is indeed dropping clues!!!! ^
2). Wait for the next one on or about August 3!!
Although it will not detail when the next promotion is to begin (that clue already has been divulged by Lurker), it could describe just what the promotion iis!!! ^
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RECAP
What thusfar can be discerned from SL's comments about the Q3 Promotion:
1). It will not extend the time one has to redeem free nights earned from Q2.
See:
http://www.flyertalk.com/forum/12099507-post594.html
2). It will not be announced prior to 7/31/09.
See:
http://www.flyertalk.com/forum/12106804-post102.html
3). It probably will commence on 8/15 or 8/16/09 -- See Above