There is a new overpass going over 35 in Georgetown as we speak. It will connect FM971 across the freeway to Northwest Blvd, about 3/4 mile north of Williams Dr. That project will be done in probably a year or less?? Once complete, as mentioned, the construction on the Williams Dr overpass will commence to create the diverging diamond.
There is a massive upgrade on RM2243 (Leander Rd) joining Leander and Georgetown. Elevated, limited access, flyovers,etc. It will be basically like 183 or 290. I'd guess it's probably less than 6 years away from beginning construction.
I agree with something said earlier that the City does typically plan better than most, but I also agree that Georgetown is probably about to be a shitshow for traffic. Too little, too late in place that is growing so fast. It has basically tripled in size in 15 years.