It is not LAW until Sept 1, 2013. It was just signed by the Governor.
SIGNED INTO LAW..... Effective September 1, 2013
SB 299 Incidental display of a handgun by a person licensed to carry a concealed handgun.
Author Rep. Craig Estes
Protects Texas Concealed Handgun Licensees against charges of unlawful carrying of a handgun if they accidentally or inadvertently display their firearm
Signed by Gov. Perry