I’ve just released 0.2.3 of the Gigs Calendar plugin. This fixes one minor bug that wouldn’t let you edit a gig immediately after you had created it. Also, if you enable the plugin on a blog using MySQL < 4.1, it won’t completely break your blog until you disable it.
Version 0.3 is coming along well. I’m making good progress on the templating system that will make the display much more customizable.