Well they are only selling Cubase 11 now at the online store. But you don’t need to go to Pro, you could go to Elements or Artist 11. There is often an upgrade sale in late summer so maybe a small jump now and the rest of it then.
Also check with reputable music stores, you may find a 10 upgrade still available. If you do you should get that automatically changed to 11 during activation - activation not purchase date determines the upgrade grace period. Likely you won’t find anything available but worth checking.