I went to the park this afternoon for a few hours, mostly to just walk around and maybe jump on a few rides. Everything but Jaguar seemed to be running with multiple trains and reasonable 30-ish minute waits.
It looks like some stuff's happening at Montezooma. There's a large white structure coming out of both ends of the station. It extends from where the rear spike used to stand to where the loop began. I got close to it at one point and thought I saw sun shining through it, suggesting it's just a tarpaulin to keep the mess to a minimum while they install the track. But whatever structure is holding it up looks oddly blocky, too — like walls. What stood out to me, though, was how low the clearance seemed.
^ From the back
^ Inside the station
^ From the front over by that kiddie balloon ride
^ It looks like they're also starting on whatever's going to end up on the old supports
In terms of the new Snoopyland bit, it doesn't seem like much has changed. The new little coaster is running (it has a booster-launch section midway through), and there's a big section of astroturf with some tables on it.
^ Astroturfland