Got my TTIG-868 today and tried to register it in TTN V3.
I read that it is (was) possible in V2 only and changes were on the way.
What is the actual state? Can I register in TTN V3?
What you read is true, it is possible in v2 only. Changes are on their way. It’s a universal constant. But changes regarding TTN v3 & TTIG are not visible to anyone here so, no, no timescales are available.
If you try the forum search you’ll find others that have tried & failed as well.
You can register your TTIG on v3 if you really want but it won’t do anything useful, you won’t see any traffic as it will continue to pickup the settings from v2 as that’s what its backend is configured for.
Thanks for the clarification.