Following last night’s announcement by Apple announcing iOS 8, the latest version of its mobile operating system for the iPhone, iPad, and iPod touch people are wondering which device’s it will run on.
For the moment the good news is, that unless you are running anything older than an iPhone 4S you should be fine.( I’ve got a iPhone 4 Doh )
iOS 8 supported devices
Apple’s forthcoming iOS 8 update will work on the following devices:
iPhone
iPhone 4S
iPhone 5
iPhone 5C
iPhone 5S
iPad
iPad 2
iPad with Retina display (3rd & 4th gens)
iPad Air
iPad mini
iPad mini with Retina display
iPod touch
Fifth-generation iPod touch
Source – Pocket-lint