Stop the presses and break out the Courvoisier, as we’ve just hit a major milestone in the ongoing mobile OS market share wars. For the first time, RIM and its BlackBerry OS have surpassed Windows Mobile market share during the 2nd quarter of this year. RIM clocked in with 17.4%, handily topping WM’s 12% not to mention RIM’s own 8.9% share during the same period of time last year. That’s a pretty huge step up. While the increasing popularity of the Apple iPhone is sure to ultimately have a destructive effect on both RIM and Windows Mobile market share, it’s clear that the Blackberry is far from losing its relevance in a competitive market. Now if only they could get around to releasing the Bold here in the states….