Aberzanzorax
Hero
I'm not Shemmy, but here's an old post that answers you.
Honestly it was some of the designer comments that got under my skin w/ regards to what 4e was all about. Two quotes or series of quotes come to mind.
"Of course, these planes don't hold a candle to 2E's hilarious Plane of Vacuum, which is truly the antithesis of fun.)" - Chris Perkins
And from the D&D Podcast #16
"Guardinals - Bullet in the Head." - Mike Mearls
"What's a guardinal???" - Dave Noonan
"They're outsiders from the plane of neutral good!" - James Wyatt
"There's a plane of neutral good? Which one was that again?" - Dave Noonan
"...Bytopia? Maybe?" - James Wyatt (giving the wrong answer, which apparently none of the other guys knew was wrong)
"I'm probably going to offend a bunch of Planescape fans, but Bytopia sounds like a place where you'd go to buy a gimmicky hamburger..."
*insert laughter and jokes cracked about the plane*
What's funny is that the page for the podcast actually went back and added a printed correction for them botching what the NG plane in the Great Wheel was, and what Bytopia was.