According to Sam Heughan, the cast is headed back to begin filming Season 2 of Outlander in February 2015. That means we only have a couple of months until some new cast will be joining in on the fun.
Thanks Outlander Italy for finding the video!
UPDATE (12/4/2014): According to Maril Davis, February is not correct. It will be later than that when they start filming.
— Maril Davis (@TallShipProds) December 2, 2014
Source: Real TV Films