The 'Spear Levels Pack' has now been released. All 21 levels are done. :)
Mappers include Gex, Thomas, ack, De Zeurkous, Otto and myself. Only the maps and a text file are included in the zip so the full version of Spear will be needed to play it.
Overall, I think it's turned out quite good. There's quite a range of mapping styles but they blend together well.
At the moment it's on the Dome News (Sept 25) at
http://www.wolfenstein3d.co.uk/news.htm
It'll be added to the addons lists in a few days.