I work over at The Plaza office complex, and take the footbridge that crosses La Jolla Village Drive to eat lunch at the UTC Mall. Here are some pictures of the work progressing on the west side of the mall, where the new Nordstrom and parking structure will go.
They tore down most of the buildings that were on the northwest side, including Cozymel's, the Scripps Clinic, and Bluefin. They all looked to be buildings that were original to the mall when it opened in 1977. I think this was the childcare building.
The Costa Verde development is still a hole, but appears to be moving along nicely. I've seen concrete trucks there, so foundation work must be in progress. I work in the shorter tower (the 10 story one), and it's kinda hard to get pictures of the site....not high enough.