Some quick notes from the Mozilla Developer News Blog. The current plan is to have Firefox 3 Beta 2 released on Friday, December 21st sometime in the afternoon There will be a Firefox 3 Beta 2 Test Day this Friday, December 14th Firefox 3 version numbering is going to be be 3-part (3.0.X) instead of the current 4-part (3.0.0.X) scheme However, extension developers can NOT yet use the new version scheme and must set their maxVersion at 3.0b2 (or whatever the current beta is at that time) Extensions now require a secure update channel to function – either by using…