On November 12, three days after her planned speech in Iowa, Palin will be released a book taking on the conservative-friendly topic of the War on Christmas.
A far more likely reason for ramping up her visibility. Books rarely sell themselves without getting the word out. She just has an in on the talk circuit that most publishing houses envy, and that she'd be totally foolish not to use.
This is in no way, shape or form an attack on Gov. Palin. Bit of envy, maybe!
She does a lot of good for conservatism. She supports candidates, gets the message out in a way that is easy to understand and is a fundraising powerhouse.