Because of the growth of South by Southwest (which usually starts a couple days after the girls tournament ends but runs through the boys UIL tournament the following week), hotel rooms in Austin have priced themselves out of the market for UIL basketball. Downtown Austin hotels run as high as $500 a night and some schools have had to stay as far away as Round Rock and Horseshoe Bay.
I had a friend of mine come to Austin last year for a college visit during SXSW and stayed in Buda at $200 a night.
The UIL tennis tournament moved to College Station due to the demolition of the UT Tennis Center; both volleyball and wrestling have moved to Garland (the former because the tournament fell during the same weekend as the Formula One race in Austin; see note above re: room rates).
UIL hasn't made any commitments for basketball beyond 2015. From what I've heard and read, San Antonio would like to have it permanently; they figure the tournament will bring over $40 million to town.
I think I read that Fox Sports Southwest will broadcast games online (not sure if that's just the finals or all games) except for the 6A girls final which will be on the cable channel.