More to come from Palin-Couric

Howie Kurtz raised some eyebrows by reporting this morning that "the worst may be yet to come for Palin; sources say CBS has two more responses on tape that will likely prove embarrassing."

A source familiar with CBS News’ plans clarified that this is part of the "Vice Presidential Questions" series with Biden and Palin. The recorded segments are scheduled to air Wednesday and Thursday before the vice presidential debate. (The series is based on the Presidential Questions series, in which Couric asks the candidates the same set of questions on wide range of topics from policy to character to leadership.)

No word on the content.