Regarding next version: I'd rather do it well than do it fast.
Upgrade instructions have to be written, changelog has to be in place, updated settings for the Images page, etc.
If in a hurry, just use rev. 7, it will work fine on all environments, please understand that the next version is an improvement on something that works without problems now.
Upgrade from rev. 7 will be just looking at the changelog and uploading new files.