As of this morning, downloads of Google Earth are of version 22.214.171.12430 (for Mac and PC) vs 126.96.36.1991 Beta previously. I can’t find any changes to the feature set, but perhaps for the Mac version it’ll run more stably on OS X 10.5.1 Leopard. So have a download.
PS: Thanks everyone for sending me links to this article called TechCrunch Heading Towards Extinction? or something:-)