You do not need 6 months residency any more...
Not sure if there's a special box to fill out on the form, and I think the fee is a bit higher... IIRC, you pay the non-resident fee to cover the background check for a non-resident.. but... No waiting is required.
http://www.txdps.state.tx.us/InternetFo ... CHL-16.pdf" onclick="window.open(this.href);return false;
Sec. 411.173. NONRESIDENT LICENSE. (a) The department by rule shall establish a procedure for a person who meets the eligibility requirements of this subchapter other than the residency requirement established by Section 411.172(a)(1) to obtain a license under this subchapter if the person is a legal resident of another state or if the person relocates to this state with the intent to establish residency in this state........