I don't think Android client was "updated", they just allowed newer build, while it even newer builds are already available to PCs.
And I don't think there's nothing left to fix, there's a ton of issues:
When you are connecting a share it may stuck if new device fails to acquire keys.
Memory usage is gross, especially for mobiles. 500MB to 1GB is too much, other apps are preempted and stopped. CPU usage might be high too for no apparent reason.
There's a ton of UI issues - you can't see what files are ignored, stuck, you can't fix sync issues or resync files.
Personally I want to buy a family 5-pack right now, just to support devs mostly as I don't think I hardly need all that features, just waiting for a next discount. On the other hand really useful features are only available on subscription, like syncing with online storages etc.