Firef0x [1] filed a request to merge indicator-session-bzr [2] into indicator-session [3]:

As the project is not under active development, a '-bzr' package is not needed anymore. It's time to merge it into the stable one. See http://bazaar.launchpad.net/~indicator-applet-developers/indicator-session/t...

[1] https://aur.archlinux.org/account/Firef0x/ [2] https://aur.archlinux.org/pkgbase/indicator-session-bzr/ [3] https://aur.archlinux.org/pkgbase/indicator-session/