I've just had my attention drawn to this elsewhere, and thought it would be of general interest.

"In particular, we are relaxing all restrictions on the development tools used to create iOS apps, as long as the resulting apps do not download any code. This should give developers the flexibility they want, while preserving the security we need.

"In addition, for the first time we are publishing the App Store Review Guidelines to help developers understand how we review submitted apps. We hope it will make us more transparent and help our developers create even more successful apps for the App Store."

http://www.apple.com/pr/library/2010/09/09statement.html