Which devices can run iOS 8?

Has Apple released a list of which devices are capable of running iOS 8?

Solution 1:

Yes Apple has released the compatible device list (see the bottom) :

• iPhone 4s
• iPhone 5
• iPhone 5c
• iPhone 5s
• iPod touch 5th generation
• iPad 2
• iPad with Retina display (iPad 3)
• iPad Air
• iPad mini
• iPad mini with Retina display

Solution 2:

It's at the bottom of the public iOS 8 page where it states the 10 models of hardware to be supported:

• iPhone 4s, iPhone 5, iPhone 5c and iPhone 5s
• iPad 2, iPad with Retina display, iPad Air
• iPad Mini and iPad Mini with Retina display
• iPod Touch (5th Generation)