Steve Jobs will kick off its Worldwide Developers Conference (WWDC) with a keynote today beginning at 1:00 p.m. ET at San Francisco’s Moscone West. The five-day event, which runs from June 6-10, will host more than 140 technical sessions with new content designed to serve a wide range of Mac developer. It has now been widely reported by major media outlets that Apple is expected to announce a transition to Intel computer chips today, moving away from IBM, although a number of analysts continue to dispute the claim.