Exactly that - I read that deadline for buying additional years (under one-off the transitional arrangements) was April, but is now changed to 31 July.
My Gateway account has glitched, online help isn't helping, and I can't get through on the phone. No doubt phone lines will free up after end FY. And I think I can safely leave it until then, but am just having an outbreak of the Nervous Nellies and wanted to check
(also hoping that thread title reminds anyone else who was thinking of buying that they - fingers crossed - still have plenty of time to do so)