Sadly there is probably no definite date for this. Trouble is that the update has to first come from Samsung then it has to be modified to fit EE criteria. This also requires a fair bit of testing to ensure its a bug-free as possible. So it's probably a while off yet and there's no way EE are going to give a date for release
What's the problem with your Note 20 Ultra Battery life? How long are you getting out of it?
If you consider the battery life to be too short then you might want to try a couple of things before sending it back.
1 Make sure you've got data consuming apps in only when you need them. They don't only consume your data but they eat your battery life.
2 Also ensure your screen brightness is at a maximum of 50%. Anymore and it will also eat into your battery life.
There is of course a battery save mode which I'll assume you've activated?
Finally it might be worth doing a backup then a hard reset. This can sometimes sort out issues like obscure apps running in the background.
Hope this helps
