RC3 is up for grabs. Had to be split in order to meet the board's new criteria but a few things to make mention of:
Crystal Caverns Zone:
Texture realignment, some additions for clarity, especially on curves and splits. There's been some spots opened up for better turning and certain areas not marked OOB have now been fixed.
Skyhook Plaza:
Corner sections have been opened up. No physics fix on slopes that needed it. Additional item boxes put in where needed.
RC2 did not get a change list when it was made at the start of the year. There's likely quite a few things under the hood that were changed that I don't have information about here but was likely due to fix any bugs that might have been encountered at the launch of RC1.
In any event, focus has been put on maps that are not currently available to the public so I don't come back to this one much.
Consult my YT channel for information.