FYI, spoiler alert in the spoilers only thread. Bringing it here
House: What's to Come in Season 4
http://tv.ign.com/articles/811/811959p1.html
Long (two pages, make sure you click on the link for page 2) article about the recent TCA. Provides confirmation about early s4 re the ducklings and new information about the Survivor game re Kal Penn's character & Thirteen. Has the most direct quotes from KJ & the cast I've seen about this event, including information on how TPTB told OE/JS/JMo about the cast changes.
Sample quote - I think the Kal Penn info is new. And yes, House is really going to pin numbers on them all.
Kal Penn is playing a young doctor who has a very cool procedure but doesn't know necessarily how to get there. He would react very differently to House's ideas. He thinks everything is cool and big. And House is going to give all the candidates numbers. Because he can't remember their names, they're actually going to wear running numbers." Jacobs said that on set already in Season 4, "It was great to see them all walking around in their lab coats, trying to maintain a certain sense of dignity while wearing . There's one character; she's number 13, but that's all we really know about her. House can't figure her out, so we call her 13."