As promised here is a roundup of all the rumours leading up to this years Worldwide Developers Conference, anything directly related to the iPhone has been included in a previous article.

World of Apple will be offering live coverage of tomorrows keynote presentation by Apple CEO Steve Jobs. Tune in at 10 am PT/1 pm ET/6 pm BST.

.Mac/Mobile Me | WoA Rumour Rating - 8/10

One of the strongest rumours leading up to WWDC was the mounting evidence and speculation that Apple will rename and revamp its online services.

Rumours were originally started by TUAW who stated that .Mac would see improvements such as full over-the-air syncing of calendars, contacts and email for the iPhone. As well as the ability to sync .Mac on Windows.

It then emerged with the release of Mac OS X 10.5.3 that Apple may also wish to rename .Mac to Mobile Me.

Evidence of renaming has been found in both Mac OS X 10.5.3 as well as the latest betas of the iPhone 2.0 OS.

Apple has also been purchasing multiple .me domains as well as the highly sought after me.com domain.

Mac OS X 10.6 | WoA Rumour Rating - 9/10

Late last week it emerged that Apple could be planning to introduce Mac OS X 10.6 at WWDC.

TUAW first reported the rumour noting that the OS release would focus on security and stability.

Ars Technica later added to the rumour by stating that Mac OS X 10.6 has an internal codename “Snow Leopard” and concurred with TUAW that the release will focus on security, stability and overall performance.

Mac OS X 10.6 is now expected to be a large focal point of the WWDC keynote and expected to be released to the public in January 2009, presumably at Macworld 2009.

iPhone/iPod touch Firmware 2.0 | WoA Rumour Rating - 6/10

Apple initially spoke about the iPhone and iPod touch 2.0 firmware during its Software Roadmap special event in March. At the time Apple promised a release of the new firmware, and the availability of App Store by the end of June.

It is now expected that the new firmware and App Store will be major points during the keynote with immediate release and availability of third-party applications.

Tablet Mac | WoA Rumour Rating - 2/10

Rumours of a new Mac tablet were revived by AppleInsider in September 2007, these were once again recently revived by Jason O’Grady. The Mac tablet is now expected sometime in the Fall.

Conclusion

Despite being a primarily developer based event Apple is highly likely to dedicate a large chunk of the WWDC keynote to the announcement of the 3G iPhone.

Expect Apple to then demonstrate the abilities of the two main development platforms, the new iPhone OS and Mac OS X 10.6; giving OS X 10.6 a release timeframe and making the new iPhone and iPod touch firmware available to public, together with the App Store and third-party applications.