Welcome to Daily

I'm just noticing that when "idle", my T'bird's message page reads: -------------------------------------------------------------- Welcome to Daily Congratulations! You’ve downloaded or compiled a Daily build of Thunderbird. These are the builds that contain the latest additions and changes to Thunderbird. Earlybird is the place where we stabilise our features before pushing them to our beta users. Experience the newest innovations as they’re developed. [...] -------------------------------------------------------------- I don't recall ever downloading (let alone compiling) an earlybird (nor even a beta) build, and I don't intend to; also, the "about" dialog claims that my version is 45.1.0 (Windows x64) and up to date, and that I'm on the update channel "release", which is what I want. Looks like _something_ went wrong _somewhere_?