Apologies if covered elsewhere already but I didn't have time to wade through all of the pages right now. Here goes:
So...
...for you, what's really at stake?
(The next post is a copy of the abstract.)
For now...nothing since the Edition Wars are over. Yes, I'm being serious.
Yeah, there's the occasional border flare-up now and again and there are certainly hard-liners & fanatics in each camp, but at this stage everyone's picked a side. The d20 Empire of WotC and it's colonies, sister-states, and allies has fractured into separate, distinct entities.
The bad parts? The individual entities have to go it alone like never before. Like a civil war, hostilities exist where they didn't previously, and there were casualties along the way. (3rd party publishers, fans who abonded d20 games altogether, etc.) As mentioned above, border skirmishes are still fairly common but the companies themselves have moved on.
The nice part? The customers won. 3e lives on in games like Pathfinder, Trailblazer, and FantasyCraft. 4e fans have 4e. They lost a TON of 3rd-party support but the most vocal 4e fans often express disinterest or outright disdain for non-WotC product so they shouldn't be too upset (taken as a whole). Others have branched out into games they hadn't considered previously, etc.
Yeah, it's a huge milestone in RPG history and another Edition War may come again someday but the first one is over.