PalmCentral.net is reporting that they have come across FCC Articles regarding the rumored GSM version of the well known Palm Pre handset. Considering that both the Sprint Palm Pre and Verizon Pre Plus sport the FCC ID number of O8F-CASC, we’re wagering that the O8F-CASG is the US-bound GSM version of the Pre. We’ve known for a while that the Pre’s internal codename was Castle, and when combined with a CDMA phone we get CASC, whereas GSM would lead us to CASG.

They offer us a release date on around May 10, which based on the photo availability date for the Pre Plus and Pixi Plus was dead-on with the launch date. And that lines up pretty well with AT&T CEO Ralph de la Vega’s “first half of 2010” for webOS on his network. Would you use the GSM version of the Pre? Leave a comment and let us know what you think!