Finally! Basic improvements actually included as simple upgrades to already purchased software rather than having to buy an entirely new product just to get what are often mostly minor improvements? How... 1990s.
Improvements to tree sync (especially with regards to reliability) are a much, much needed improvement. Admittedly with the last big patch my tree stayed in sync for a lot longer, but even so it recently lost sync and that was that. It's a real pain having to break the non-working synced tree, upload it all again, send out all of the invitations (yet again) and then delete the old tree all while watching those little shaking leaves pop up with links to your now-deleted old tree show up with no way to tell the program to ignore them for the next 3 months it will still quasi-exist in the database.
PLEASE stick to this upgrade model instead of trying to force us to buy the software over and over again every year just to get what we thought we were buying in the first place. If you do add truly new functionality, maybe just sell that as add-on modules if you must.