My local NBC O&O has switched to Look S likely just a week ago. When recording this on July 22nd, I happened to capture the last 12:00 noon broadcast as they align with other O&Os to a 11:00 block. The following day was basically a repeat of Today.
The open is a bit unique, and different from the California, Miami and New York stations, so there is some customization to the stations. The graphics like previously described are a better version of Look N, but similar to Nightly News’ graphical package.
Also the customized open was the theme in many of the promos WBTS ran during the spring time and during the Stanley Cup Playoffs. There was a lot of hints a new look was coming it’s way. I can’t speak for other stations, though it should be noted.