Nickelodeon Universe posted on Instagram on January 18:
I like that you can see the original log design of the station under the side part of the station facade they tore down. It makes me sad again about the loss of the original Knott's-created park, but I'm happy to see some updates, as much of the park feels stuck in 2008. The ironic part is that I remember when the change was announced, it was meant to keep things fresh. Pepsi likely pushed for this as a major sponsor, along with their new logo. However, updating every ride when a show ends costs money, and we've seen a lot of outright replacements rather than rethemes since 2008. Also, I'm not sure how relevant Nickelodeon will remain, given recent comments made by Paramount.
I also wonder if the track and trains will be repainted, not just the station. According to the post, it's closed now as part of the refurb, so maybe that will be part of the process as well.