But maybe Hyde is mistaken and there is no such thing as the XTL.
Hyde is never mistaken. Hyde is only mistaken when he orders Big Mac with Salad thinking it would cancel each other out.
lol on a serious note, Rajiv mentioned that XTL is indeed the backlit version of XT. And they have planned for it but doesn't have a firm release date.
So as of now:
QuickFire Rapid = Top printed tenkeyless
QuickFire Stealth = Side printed tenkeyless
QuickFire XT = Top printed full size
QuickFire XT Stealth = Side printed full size (yes they also planned for it, no release date yet)
QuickFire XTL = Backlit version of XT, no release date so far