The L.A. Times interviewed Taylor Lautner for todays countdown.

“But there’s reason to hope, right? (for the sequel) Because you’ve been in character as “older” Jacob before …
Yes, during the auditions. I originally met with Catherine and she wanted me to do a ‘chemistry read’ with Kristen Stewart. We did a few scenes from the first book, like the beach scene, and then we read some lines straight out of the books “New Moon” and “Eclipse.”