Did they update the hardware in these 2 years?

One would assume, they haven't announced (that I can see) which A-chip they put in here but rumors said it would be the A18 (2024 chip). Which seems like it would have to be updated since if this was ready 1-2 years ago they would have designed it with an even older chip (their HomePods have used multiple generation old chips, which, to be fair, is reasonable).