I parted with my cash for a set of JPX 919 forged the day before the 921 preview photos came out... was gutted to say the least. Was also told there was a minimum of a 4 week wait for the clubs as the factory in Scotland (I’m in the uk) was running at limited capacity. Heard rumours they were also running out of stock bits for the 919’s. I went back to the store where I made my purchase and was told Mizuno was offering custom fit customers the chance to change their order to the 921’s at no additional cost. Just a longer wait. As soon as the store can pre order they will. I’ve gone 921 forged 4-gw.