no official release date, but the earliest you would see one in the stores would be end of April. The PLR-22 pistol will probably be out 2 to 4 weeks before the SU-22.
so far there is only one model rifle that the distrubutors have a price for. That is the SU-22CA (C style barrel, A style stock). There will be an SU-22E with the same barrel, but Pistol grip collapsible stock. this one will be out later, and the price is not yet set.
both models will be available with 10round mags for those in California.