United announced the '26 qualifications on October 29, 2024, so the announcement is later than last year's.
The dates have been fairly inconsistent over the years IIRC (good luck with that).
I expect no change in the qualification requirements for 27 over 26, but I expect the Promo starter will be adjusted to get to UA's desired Premier levels.
The 1MM companion changes will kick in for 27. I don't know if that will affect their calculations.