@Noyyau: In theory, no you don't. I have deployed mods support on the launcher a few days ago. MCP is compatible if you downloaded it less than 5 days ago.
Basically, all the mods in Assets/Modules/ are preserved during update (and the activation state). Audio will also be injected automatically into main files. MCP contains files outside the modules folder but these are preserved because these are listed in the MCP module folder (modInfo.xml).
Sogroon will release an update of his mods but there is no hurry because these are compatible (More Music and Dinosaurs).
So it's a NO, and compare to before, you don't even have to inject audio into xml by woc_installer. It's automatic.
All right, I'll try now with the new rev and see how it goes.
UPDATE
I upgraded to 885 and both More Music and MCP disappeared... I mean the files have been deleted, not simply deactivated.
Also the launcher keeps telling me there's "an update available" even if I just updated.