The mystery of the HTC Rider has finally been solved!  HTC has unveiled the HTC EVO 4G+ for the Korean market.  From what we can gather, the HTC EVO 4G+ is essentially an HTC EVO 3D without the 3D.  It comes equipped with a 4.3-inch qHD display, dual-core 1.2 GHz Qualcomm Snapdragon processor, 8 megapixel…