Turns out as they closed Nickelodeon Studios, they were opening Nickelodeon Suites Resort, also in Orlando, Florida. The time capsule was quietly transferred to the hotel and reburied in front of their lobby with an updated marker.
I haven't been able to find footage or pictures that shows the square in full detail, so unless someone who works or visits the studio takes a picture of it and posts it online, there's really no way to tell.