A few days after I made the post about the Gan 11 M series being completed, they release this, a 53 mm version of the Gan 11 M Pro, presumably it will not have interchangeable magnets but it might still have corner-core magnets, that remains to be seen. I personally do not have any problem with full-size 56mm cubes but some younger cubers with smaller hands may prefer a slightly smaller cube, whether 53mm, 54mm or 55mm. Gan have previously released the Gan 354 M and Gan 354 V2M at the larger 54mm size which were scaled down versions of their flagships at the time, as I proved in my Gan 354 v2M review: https://youtu.be/70km-IUgwWs.