I've been to the one in Dallas, so I knew they were in Texas. But this will be the first one outside of the DFW area, which is a good sign that they will be expanding all around Texas. Probably only a matter of time before they end up in San Antonio, Houston, and Corpus now that they have a distribution center here. As an Austinite, I personally was just waiting for them to come here, so I'm stoked.
And this discussion has already been hashed out in other threads, but yes, In-N-Out is not like the greatest gourmet burgers other. They are a simple, fast-food burger...not a whole lot different from what you can already get at Whataburger, Mighty Fine, or P. Terrys. But they are (imo) pretty damn good for a basic, cheap burger.
For me, it's definitely a nostalgia thing (having lived in California for a while, and making it a point to hit them up whenever I visit Cali or Arizona), as it is for many people who have come over from the west coast. I imagine easterners feel the same way about White Castle...I tried them and wasn't too amazed, but I didn't grow up with them either.
I won't be one of the whackos waiting in line for 2 hours to get my order, or crying when I eat it...but once the hype dies down a little, I'm sure I'll be there on a semi-regular basis.