Indeed, and this tweet suggests things are moving: https://x.com/TfL/status/1849445683159282078Acceptance of expired 5-10 / 11-15 Zip cards has been extended to 31 December.
Cyber security incident in September 2024
Keep up to date on the latest investigations into the cyber security incident and our responsetfl.gov.uk
Following the recent cyber security incident, we have been working hard to restore our systems and hope to begin accepting applications for new photocards soon. In the meantime, TfL and the Train Operating Companies have agreed to extend the period where expired 5-10 and 11-15 Zip Oyster photocards will be accepted until 31 December 2024.