iOS 8 will be available as a free software update starting Wednesday, September 17 for iPhone 4s, iPhone 5, iPhone 5c, iPhone 5s, iPod touch 5th generation, iPad 2, iPad with Retina display, iPad Air, iPad mini and iPad mini with Retina display. New iCloud pricing includes 5GB free, 20GB $0.99/month, 200GB $3.99/month, 500GB $9.99/month and 1TB $19.99/month. Continuity features and iCloud Drive will be available on Macs running OS X Yosemite. In October, SMS Continuity will be available as a free update to iOS 8 and iCloud Photo Library will be available as a beta. Starting in October, with iPhone 6 and iPhone 6 Plus, Apple Pay will be available in the US as a free update to iOS 8. Features are subject to change. Some features may not be available in all regions or all languages.
Sure seems like a big iOS 8 update will come along side Yosemite next month.