Hi, Do we really need a big number jump? Adobe is unlikely to release another version of the Flex SDK and even then it will be the "Adobe Flex SDK" not the "Apache Flex SDK" (or another name eventually if Flex can't be used). Having a smooth timeline of version numbers with the SDK make senses for people using existing Flex frameworks in migrating to Apache Flex frameworks.
If I was using Flex 4.6 and there's Apache Flex 4.7 I'd feel more comfortable moving to it know there's likely to be minor changes and bug fixes and the like. Compared to moving to Apache Flex 10.0 which implies (to me anyway) a large number of changes and potential API changes etc etc. My vote (not that it formally counts) would be for a Apache Flex 4.7 version as the initial release. Justin