MWLB - Hemionus!

And isnt July normally when we would get some Masteria update? At least with Prose still around?

There is no such thing as a usual time for them to do anything, specific holidays and anniversary excluded.
They do things whenever their plan says to without any rhyme or reason.

All signs point to masteria being as dead as Tespia because with the redesign in progress in KMS no new areas are going to be made because they'd have to be completely rebalanced again after this finishes. You don't do the same job twice if you can help it.