The inaugural E3 Business & Media Summit is just days away now, and such important gaming events usually prompt enough speculative chatter to kick start our efficient Rumour Mill into complete overdrive. The first significant arrival in terms of E3 rumours is the claim that Harmonix's Rock Band will appear exclusively (for a limited time) on the Microsoft Xbox 360 when it is launched later this year.
This has been sparked by the appearance of an invite to the developer's E3-based event this coming Wednesday, upon which a distinctive Xbox 360 logo appears... but not a Sony PlayStation 3 equivalent. Wired's Chris Kohler has previously speculated that Microsoft might have once again used its financial clout to gain exclusive rights to the upcoming virtual musical extravaganza.