Well, I don’t know if SODA is rising, falling, or maybe falling in one regard because it is rising in another, but I do know that the list of accepted papers has been published. 
According to Cliff Stein, there were 432 submissions, of which 135 have been accepted. A comment at Jeff Erickson’s blog reveals that 135 is the maximum that they can fit in 3 days, as discussed in the business meeting last year.
Update: this is the official list on SODA 2006′s web site.