I've been working on updating the 2009 start date deferral table (not to be confused with the 2010 table) with all of the recent outpouring of info on start date deferral extensions and offer revocations.
A lot of firms are pushing would-be associates back even more (we're now at, like, full body's length, rather than just arm's length). Some notables: Arent Fox, Chadbourne & Parke, Baker & McKenzie... the list goes on.
Check out the table, which I'll endeavor to keep updated for as long as this "season" lasts. Please also email me with any updates, corrections, or thoughts of your own.