Research In Motion has not found success in the tablet market quite yet. The struggling smartphone vendor crossed over to the tablet space last year with its debut slate, the BlackBerry PlayBook, and it was met with mixed early reviews. There was nothing mixed about the half-billion dollar charge RIM had to take in the third fiscal quarter last year due to unsold PlayBook inventory, however, and RIM would later slash the PlayBook’s price in an effort to move units. In spite of the company’s torrid past with tablets, CEO Thorsten Heins confirmed that a 4G version was still in the works, and now we may finally see it launch later this month. Read the full story at Boy Genius Report.