No actually, Meteor Lake series would indeed have this naming convention: 1st Gen "Core Ultra" Branding. They won't have the 14th gen naming scheme, and I'm sure this naming scheme is final. Those Chinese slides also seem OK to me.
Are you confusing with this naming scheme, or something else ?
BTW, I'm pretty sure Intel is opting the ULTRA naming scheme to deal with the overlap of a significantly newer architecture with an older gen architecture already being in the market.
So when Intel's Core Ultra branding takes effect, users will be able to tell "Meteor Lake/refresh" based SKUs apart from those based on "Raptor Lake," but looking for the Ultra brand. This might also help to transition the market between processor arch generations, and also to improve the inventory digestion, IMO.