Apple may have sold as many as 500,000 iPhones over the launch weekend, according to Piper Jaffray analyst Gene Munster. Munster had projected sales of 200,000, an estimate that was beaten according to J.P. Morgan analyst Bill Shope, who estimated sales of 312,000 units. While Apple has yet to release any exact sales figures for the new device, the launch is already being viewed as a success by industry pundits. “This is a very successfully…