What would the BioWare forums be without rumors?
On a serious note, I really hope they do several DLCs like they did for ME and even DA:2. They just need to space them out long enough so that when we finish up DA:I, it will be time to play ME:A.
I want one this summer (Darkspawn?), one this fall (?), and one this winter/beginning of 2016 (?). I will accept there being only 2 more, but I want 3.
At least a couple more substantial MP DLCs as long as its worth it for Bioware. One will almost certainly bring Darkspawn as a MP enemy type and Deep Roads map, and if Qunari do come in, with unique units, I can see a Qunari faction coming in MP as well.
I want the upcoming DLCs (not counting JoH which to me was basically like a cut endgame zone + a couple cutscenes, though I know that's an oversimplification) to basically add 1/2 the size (or preferably more, if they can focus on story areas and cool dungeons over large map zones) of the original main questline size/duration. JoH has been little for that so far, as much as I do rather like parts of it.