USPSA announced that Pistol Caliber Carbine Division will be availabelf ro all levels of USPSA competition. The division is still provisional, but there has been some buzz about the new division. It is up to the match director to offer.
Calibers allowed are 9mm, .357 SIG, .40 S&W, 10mm, .45 acp.
Minor scoring only
Can use optics, slings
For those interested in the rule, here is Appendix D8 which deals with rules.