The new version is currently test played by me and a few others to get rid of as many bugs as possible. So a specific date is hard to say unfortunate but I would assume sometime next month.
1.24 saves arent compatible anymore since i needed to make changes to the skill engine I thought it would make more sense to make it unavaiable so people dont get startet now and then can't upgrade to the new version.
Very sorry for the inconvinience!