If last year is any indication, AC12 should be introduced at the GS User Roundtable, which is one week from today. If memory serves, AC11 was released about four to six weeks later.
EDIT: I just checked my notes, and the GS User Roundtable was May 1st and 2nd last year, and we received our copies of AC11 the end of June/beginning of July.
MacBook Pro Apple M2 Max, 96 GB of RAM
AC27 US (5003) on Mac OS Ventura 13.6.2
Started on AC4.0 in 91/92/93; full-time user since AC8.1 in 2004