It has been confirmed that Apple will be unveiling iOS 6 at WWDC this week, but leaked iOS 6 Beta links indicate that the third-generation iPod touch and original iPad may not be compatible with Apple’s new mobile operating system.

Chinese website WeiPhone.com posted the links last night, which send users to the Apple Developer Website for iOS 6 beta build “10A5316K”, but WeiPhone.com highlights that they will not currently be downloadable. At the moment, clicking the links takes users to a “Session Expired” or “Access Denied” web page.

The links include alleged iOS 6 beta downloads for iPad 2, new iPad, 2nd gen Apple TV, 4th gen iPod touch, iPhone 4, iPhone 4S, and iPhone 3GS. Also among the links is currently unannounced Safari 6.

Apple Insider reports that Apple is likely to release the iOS 6 Golden Master in September, ready for an iPhone launch in the same month.

KGI analyst Ming-Chi Kuo said in a note: “Based on the release schedule for iOS 6 GM, there is a very good change iPhone 5 will start shipping also in early September.”

Kuo said that he expects greater integration with iCloud, Facebook, iTunes Store and App Store, improved Spotlight capabilities, updated user interfaces and the speculated Apple mapping service that is set to replace Google Maps.

Kuo also indicated that Apple might bring back the MacBook with a new slimmer design, and eventually discontinue the MacBook Pro.

Check out our live feed of Apple’s WWDC keynote at 6.00pm tonight for news as it happens.