Nagios author sent an email last night stating Nagios 2.0b1 was released. This will obviously be masked for a while since its pretty new. This is just a bug for netmon since I'm sure someone will post a bug soon :)
eldad: I'll recommend you tweak the current ebuilds or we can do this together. It'll be a while before I get to play with this new version! I'm not sure how different this version will be to build, etc.
This version already has some issues, I think we'll sit on this until the next tarball (hopefully this will be soon)
no tarball yet - working on ebuild now.
added nagios-core-2.0b_p1. Please test - it is masked due to dependencies being masked and I assume your more an expert than me.
Please keep any 2.x version masked since its not even stable upstream yet. I think you were going to, just making sure :P