Wow, I'm getting days and days now on a charge, it's awesome. Plus, safari is much snappier.
Truthfully, I don't see a difference yet, nor do I see any wifi fixes. I do think I see something changed in my cellular (hspa+) signal strength. And perhaps a new cellular bug, dropped a call just now, and saw my phone searching for a signal, literally the first time that ever happened in my house. That can't be good.