So it's expected to be announced on Sept 12th. And it's expected to have a bigger, wider screen, 1136x640 is expected (http://www.theverge.com/2012/8/7/3225844/apple-iphone-5-ios6-scaling-resolution-apps)
But will Marmalade be ready? It took a little while to get Retina iPad support, and I'm expecting the iPhone 5 will need some sort of similar updates to Marmalade to let us use the new resolution?
I'm hoping to release my current game in September, hopefully after testing it on an iPhone 5, assuming they're available by then...
And another issue... What should we do if we've got an iOS 3.1.3-compatible app that we want to update for iPhone 5 support? - as 6.x versions of Marmalade removed support for iOS3.x, we can't update those apps without breaking them for any remaining 3.1.3 users :(
(This wasn't so much an issue for the launch of the retina iPad, as there's not much point supporting that resolution with existing low-res assets. But a game that runs on current iPhones could more easily be tweaked to run at the expected new resolution)