As you probably already saw the file for "AstroBaldi v0.4.6 (Early Version)" was shared on to the official itch.io home page's download section. Horewer as you can probably tell (and see) it is the EARLY VERSION, not the final version of this update, as I did not yet implement the features I want to have in the  final version and some that are still buggy. Also some bugs were not fixed that I planned, so it is not the  final version. Of course because of my rule that I will upload only AstroBaldi version 0.5 and up, this version will be  removed and a new version - new polished version (with extra features in the "SECRET MODE") will be available in the download library.  Of course I will inform you  thanks to the development logs when the final version of the update will be released and when will this one get removed.

Also, no changelog. The next changelog will be in the v0.4.6 update post covering all the changes between 0.4.5.2  and 0.4.6 (hopefully).