The .4.1 nightlies haven't been announced because, imho, they're not worth using. I only put two out, and it was just to preview the symbiotic loader - k-meleon itself was pretty bad because mozilla was really unstable for awhile after the .9 release
Also, sourceforge was busing being hacked, so I couldn't put anything up on the usual FTP space - and I don't have the resources to host a publicly announced build on my own site. When the next "nightly" build is released, I'll make an announcement.
-- Jeff