Developers who are trying to access the iPhone dev center, or iTunes Connect today, will be brought up with a “Sorry!” message, meaning that Apple is working on some type of update today.

It might be due to Apple wanting to make sure everything is perfect for the iPad launch, which is rumored to be happening March 26th. Or, it might be an update for the iPhone OS 3.2 beta 3 SDK, which has been added and removed multiple times since its release.

UPDATE: The dev center is backup and it seems like no major changes were made.

UPDATE 2: Through further investigation, it seems like Apple has lowered the price to become a Mac Developer to only $99.