In a series of discoveries that would make Sir Arthur Conan Doyle proud, Pre Central forum member ToniCipriani may have uncovered the release date for the AT&T version of the Palm Pre. Both the Sprint and the Verizon version of the Pre have passed through the FCC with a confidentiality date that ended on or about the actual launch date. Buried within the FCC documents for a third version of the Palm Pre, with AT&T friendly 850/1900 GSM and WCDMA bands II/V, is a short term confidentiality end date of May 10th, 2010. If history is any indicator, then we can expect the Palm Pre to drop on AT&T in May, a mere 11 months after the handset’s original launch. Anyone up for an AT&T Palm Pre Plus Plus?