Are there still employees on the project? I had been under the impression that the entire core dev team left in 2003, mostly for Google, and that Alcatel-Lucent no longer staffs the project. Looking through the last-modified dates in the source tree, there are a handful of edits in the last few years, but not very many, and the only specific people I can find who've worked on plan9 in the past 5 years are all external to Bell Labs (e.g. the 9front people).