The 2011 property tax rates for the taxing entities within Travis County and Williamson County have been released.  I have updated the property tax pages on my site for each county to reflect the new numbers (2009 and 2010 property tax rates are also available).  The links are:

Travis County (listed alphabetically)
Travis County (listed by category)

Williamson County (listed alphabetically)
Williamson County (listed by category)