Four key BlackBerry DevCon announcements -- and what they mean to you

Research in Motion (RIM) is holding its fourth annual BlackBerry Developer Conference (DevCon) this week in San Francisco. Though today is only day two of the three-day event, the BlackBerry-maker has already made a number of significant announcements that are sure to please both RIM developers and BlackBerry users.

Keep reading for a quick breakdown of RIM's four most notable announcements, along with explanations of what the news means for BlackBerry developers, as well as RIM smartphone and PlayBook tablet owners.

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