I don't thnk that'll ever happen
They are not hurting financially in any way that would press them into tooling up for a caliber and cartridge that, while effective and currently in use, is kinda relegated to less than enormous use.
There are some decent .311 bullets out there by some of the other makers and while they are not top-drawer premium bullets there are some a little above the median line of quality.

http://www.sierrabullets.com/bullets...e&Caliber=.311