CoverGen is in final private beta testing, shortly will be entering public beta testing and pre-order. When you make a purchase of CoverGen you will be given access to all Public Beta releases up until final, at the point of Final release you will get 1 year of all major updates and all minor updates for free.
Final release timeline will happen when i feel there has been enough testing and little to no bugs left.
No more features are being added at this moment until final release, so the beta you get when you pay will be the same as the final feature wise. More features are planned, some if not most in coming minor releases, just not until after release, I would personally rather have a stable product that a full featured one. (However don’t underestimate the feature set as is, it is rather extensive)