GoPro to debut GP3-powered cameras in April, shares rise
** Action camera maker GoPro's GPRO.O shares rise 3.9% to 67 cents ** Co to debut new generation of cameras powered by its GP3 processor at the National Association of Broadcasters Show on 19 April ** New line of cameras have more than double the pixel processing, larger sensors and expanded features - GPRO ** Including session moves, stock has fallen 52.5% this year (Reporting by Anhata Rooprai in Bengaluru) ((Anhata.Rooprai@thomsonreuters.com))