While the UT Austin (McCombs) admissions office won't release the school's full MBA application until next month, the school has recently posted its 2008-2009 application deadlines.
McCombs uses a rolling admissions process (i.e., applications are evaluated as they come in, not in discrete batches based on rounds), but the admissions office normally publishes "suggested" deadlines:
UT Austin (McCombs) Application Deadlines
First suggested deadline: November 1, 2008
Final deadline international applicants: February 1, 2009
Final deadline for all applicants: April 1, 2009
For more advice on applying to McCombs, visit the Veritas Prep UT Austin (McCombs) information page.