I voted that I think it is obvious how different playstyles will be supported: modules. They have been saying it from day one and I see no reason to doubt what they have said.
Quick question: are we talking "modules" as in prewritten adventures, or are we talking "modules" as in splat books with a modular presentation of options?
My hope all along has been the core system for 5e will be very loose, with the various optional modules serving to tighten it up for those as wants such. But I'm not holding my breath...

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.