Apple appears to be taking a step back on their stance regarding 3rd party development tools. I'm not a dev, but I actually liked their stance. If you are developing for a platform, you should use the tools of that platform, it will make more consistent and better apps. I am interested in reading what exactly the review process guidelines are. Let's see how transparent Apple is trying to be.

Statement by Apple on App Store Review Guidelines

The App Store℠ has revolutionized the way mobile applications are developed and distributed. With over 250,000 apps and 6.5 billion downloads, the App Store has become the world’s largest mobile application platform and App Store developers have earned over one billion dollars from the sales of their apps.

We are continually trying to make the App Store even better. We have listened to our developers and taken much of their feedback to heart. Based on their input, today we are making some important changes to our iOS Developer Program license in sections 3.3.1, 3.3.2 and 3.3.9 to relax some restrictions we put in place earlier this year.

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.

The App Store is perhaps the most important milestone in the history of mobile software. Working together with our developers, we will continue to surprise and delight our users with innovative mobile apps.