When will the new normalization rules be released?
The new normalization standard was proposed to the ENS DAO and formally accepted by the DAO with unanimous support on June 18th, 2023:
What happens to names made invalid under the new rules?
ENS names that became invalid under the new name normalization rules, and were still registered, had their gas fees, temporary premium fees, and any remaining registration fees refunded as part of [EP4.3] [Executable] Refund .eth names affected by normalization updates
I registered an invalid name and I can't manage it
Invalid names cannot be managed or renewed using the official ENS Manager App and are entirely unsupported.
Some third-party tools have limited functionality to manage them: