Thunderbird 5 Beta 1 (Miramar) Coming

Mozilla Labs should be releasing the first beta for Thunderbird 5 (Miramar) later today. Important: To match up with the current version numbering of Firefox, Miramar has been renumbered from 3.3 during the Alpha builds to 5.0 for Beta builds and final release. Further Thunderbird has skipped version 4.0.