For anyone who might have missed the news, the Scrivener blog made the official announcement:
We’ve been dropping hints for a while, but can finally make an official announcement: Scrivener for iOS is now in development.
Looks like a version will be released sometime in 2012. This is so cool, and I’m so excited that progress is being made on this front. It will be great to be able to use Scrivener on my iPad.