Apple announced that the Q1 FY 2009 earnings call is taking place this coming Wednesday and will be offered live via audio stream.
This marks the first earnings call since Steve Jobs took his leave of absence last week.
This is the most interesting earnings call as it covers Apple sales during the Holiday shopping season 2008. The live webcast of the Apple earnings call will begin at 2:00 p.m. PST on January 21, 2009 at this page and will also be available for replay for approximately two weeks thereafter.

There is also of course a conference call if you prefer that. The conference call will be available as a continuous rebroadcast beginning Wednesday, January 21st at 5:00 p.m. PST/8:00 p.m. EST through Wednesday, February 4th at 5:00 p.m. PST/8:00 p.m. EST. The dial-in number for the rebroadcast is (888) 203-1112 (toll-free) or (719) 457-0820. Please enter confirmation code 4939950.
Via the Apple announcement.