If they're going to make D:OS more amazing than it already is, guess compatible mods aren't as important (and they may still be compatible anyways!) One last thought: WOOOT!!!
Edit: wrong thread, but points apply anyway.
Considering that there is still script in D:OS from at least 2002 I'm sure it won't break everything. Wouldn't shock me if some stuff broke though. Especially if they remove older root templates or textures and such.