Yeah, I was discussing this move with a co-worker last night. Moving from the Bay Area in the middle of everything to....a metal building off a country road in Bastrop, Texas. Things are moving up there.
All jokes aside, yes, they'll need to build up infrastructure along 71. We've discussed in the Transportation thread the growth along the 71 corridor and planned controlled-access facilities from Austin all the way to I-10. Whether it would be upgraded to an interstate is debatable, but folks have floated it previously.
I-14 is already in the works, and while it doesn't go through Austin (or Bastrop), it will benefit the region.