There are new ventures sprouting up daily. Word on the street is that there's also a brewpub opening soon in Marble Falls, just west of Austin. The name is Double Horn Brewing Company I believe.
Also one in dripping springs. Forget the name.
Regarding Shiner: I wouldn't make it a destination, it's really not that great. The tour is short, and they give you like 3 beer chips. If you are driving out near that way for some other reason, then sure, make a short detour, but to drive from any of the 4 major citys... well, you are probably better off just spending the gas money and getting a Shiner mixed pack.