FWIW, AGR still seems to stock much of last years SF stuff. Look at the bottom of the SF page on the AGR website for the link. I know he has 9Ns in stock and he shows the 12ZM also.
Yes, my understanding is Surefire does still make the N62 500 lumen lamp and it does fit in the M4. You can also put teh lamps from the M4 in the 12PM/ZM
Some places still have SureFire 12ZM left in stock.
Best to phone. It's a communication thing.
"Yes, I said 12ZzzzM! Do you have any instock please?!"
The MN60, MN61 & N62 all work in the M4 & 12PM/ZM & Leopard, (as well as the MU98? that PK has photos of, and is mentioned in the MU promotional video??)