Yahoo announced a forked end-to-end extension in March[3] and while commits have been more frequent[4], they haven't released either.
Does anyone have any update on these?
[1] https://googleonlinesecurity.blogspot.com/2014/12/an-update-to-end-to-end.html
[2] https://github.com/google/end-to-end/commits/master
[3] http://yahoo.tumblr.com/post/113708033335/user-focused-security-end-to-end-encryption
[4] https://github.com/yahoo/end-to-end/commits/master