From the Warhammer Community board:
"Missions are still a big part of the new Warhammer 40,000.
Experienced players will often tell you that it's just as important to play the mission as to obliterate your enemy to secure victory, and that's just as true now.
There are a lot of missions in the new Warhammer 40,000 book, which will give players hundreds of hours of variety.
The most basic mission, Only War, is flexible enough for any style of game. This mission works with armies of any size (though two that have comparable total power levels work best). This mission will be available as part of the free rules in the Warhammer 40,000 Battle Primer and, of course, in the new book itself."
The rest of the article, here:
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