According to a report filed by ZDNet’s Mary Jo Foley, Microsoft and RIM could announce a new, free, hosted BlackBerry service as early as today. Citing anonymous sources close to the plans, the site reports that the two companies will collaborate to provide the cost-effective BlackBerry Enterprise Service to customers utilizing Microsoft’s hosted Exchange 2010 Online service. “RIM is only mobile OS that doesn’t use (Microsoft) ActiveSync-aware devices and has a separate device management platf...

We’ve been able to independently confirm the following details, though we don’t believe we have all of the information surrounding this announcement yet.With that said, according to multiple RIM employees, RIM’s co-CEO Mike Lazaridis will be making a “huge” announcement on Tuesday in Barcelona. The announcement is said to be about (at least in part) BlackBerry Enterprise Server Express. We’re told this will be relaunched as a free and unlimited user BlackBerry Enterprise Se...