I have a 6x and several 3x, believe it or not the spot is smaller on the 6x one. And XML2 versions have been out for quite a while (CNQG, and that Securitylng clone thing, though they advertise it as XML some are shipping out with XML2s). There's even 6x versions with XML2s.
No-name '6XL2' dissection, This Securitying Flashlighter (lolwut?) is insane, 6x fast tech King XM-L2 no name (very nice), Securitylng? Really? SRK Clone from ebay - Unboxing, initial thoughts and amp draws - Updated with tear down photos., etc.