We don't have to rely on our feelings about the state of the downtown condo market. We have numbers!
In 2008 there were 776 units completed and made available. 670 of those sold.
Right now about 790 units are under construction and 350 of those are under contract.
That leaves 546 units left to sell over the next 3 or 4 years, with no more units projected to be done in that time. That's really not much at all, considering that about 25,000 houses are sold each year in the Austin metro area. And also consider that Austin is growing at the rate of 60K people a year.
If anything, I predict there will be a shortage of condos in 4 years.
Source for above numbers:
http://www.austinchronicle.com/gyrobase/issue/story?oid=oid:754273