Just got an e-mail:
Enjoy Concierge Tier membership
Dear xxx,
We let you know a few weeks ago that we were changing the Qualification Period start date for all AerClub members to 1st April. As promised at that time, we have reviewed your account and based on your last twelve months flying with us, we're delighted to say we have extended your Concierge Tier membership and any remaining unused benefits to 31 March 2026. No additional benefits have been added to your account as part of this extension.
To maintain your Concierge Tier beyond 31 March 2026 you will need to earn 1051 Tier Credits before the Qualification Period ending 31 March 2026.
These changes will not impact your Avios balance, and you can continue to collect and spend Avios with Aer Lingus and our AerClub partners as normal. We have also made it easier to spend Avios on Reward Flights using aerlingus.com.
Which is interesting because this makes it look like I got extended because I did enough in the "review period" while on the surface it got extended to align the dates.
Plus, if this is correct than I have nearly 2 years to get the 1051 Tier Credits not just one year. If that is true, then wow that is generous. But I assume it's a simple mistake in the form letter in which they just did put in the variable for new expiry date rather than the correct one.