After months of rumors Samsung has officially announced the world will meet the next Galaxy phone in London on May 3rd with this invite, first received by Dutch site Tweakers.net. While most speculation will immediately focus around something we're expecting to arrive as the Galaxy S III, the BlackBerry World-spoiling invite we received is conspicuously devoid of details like name or specifications. The Galaxy S I and II are already million unit sellers many times over since they got started two years ago and have lead the Android pack as of late, so what will Samsung do to top i