No. We really like the concept of a true lifetime license. We think that a user who purchases a lifetime license should be able to use the product as long as possible, without being forced to make any additional payments in order to continue using it in a convenient way. That’s why the last thing we would like to do is to force anyone to pay for an upgrade by closing support for an old product release.
UVPackmaster 2 will still be supported – bugs will be fixed, and its compatibility with the future versions of Blender will be maintained. But no new features will be implemented to it.