The next campaign for Warhammer 40k is rumored to be April/May and to be a round 2 for the Dark Angels and Crimson Slaughter. Nightfury has chimed in on a name he has heard called Darkstorm. It definitely fits, and we shall see as time moves forward what it will mean, but for now it works.
Please remember that this is a rumor. As with all rumors a little salt is required.
Nightfury from the Faeit 212 Comment Section
2015 will be the year of supplements and campaigns. Dark angels will almost certainly feature in the next campaign which i heard quite possibly is called DarkStorm