Science Update
From Kerbal Space Program Wiki
The Science Update is the 1st of 5 major updates for KSP2 Early Access.
Features
This Update will add a revamped Science mode from KSP to KSP2 with new science gathering parts, and presumably, small differences from KSP1's Science mode for improved user experience.
Release Date
currently the release date is unknown, but will likely be in more than a few months (as of 3/1/23)