Does Kel-Tec ever plan on offering the Sub 2000 in this caliber or is the design not suited to the power of the 357 SIG. The SIG appears only slightly hotter than the .40 but it would extend the range of the Sub a bit.
I haven't heard that they have any new plans on expanding the SUB line. They're currently way too swamped trying to fill SU-16 and P-3AT orders and fixing same. I've heard nothing about any possible new offerings at the SHOT Show this year.