Some kind fo firefox fundraising campaign (or Torbutton. I don't know)
Torproject blog mentions that TorButton was updated to 1.5 https://blog.torproject.org/blog/new-tor-browser-bundles-firefox-1703esr But, TorButton's page is still shows "Current stable version:1.4.6.3 (10 Oct 2012)" https://www.torproject.org/torbutton/index.html.en
Trac:
Username: sekesey