DoW III is coming out this year @Sorck
...if the pre-orders are anything to go by. However, I think one can expect to see DL being sold that should have been included in the main game release.
In regards to TW:WH - I think the game is interesting...and have played through with both the dwarves and the wood elves...but I cannot honestly say I enjoy the game. The biggest issue I have with the game is that it feels clunky, from the map design to the UI. Overall, I think it was a great attempt for the TW series to branch out and try something new, I just do not think it was done that well. Not to mention you end up spending more on the DLC than you do the actual game because everyone wants to turn a profit instead of making their customers satisfied.
In regards to multiplayer games - I tend to avoid MP these days. The chief reason is because I tend to enjoy single player campaigns because you do not tend to feel rushed in any sense of the word.
Overall, TW:WH is an interesting game, and I do have fun while playing. And I am also hoping for Lizardmen (or High Elves) to be released sooner rather than later.