The Apple M chip roadmap is accelerating:
That means that the M7 should arrive in the first half of 2027, followed by the M7 Pro and M7 Max at the end of 2027 and an M7 Ultra in 2028.
This is a companion discussion topic for the original entry at https://www.reddit.com/r/LocalLLM/comments/1v2awoc/a_future_15_tb_mac_studio_a_game_changer_for/