since the first two threads have been archived:
Chance to fly BG DC-10 on Special flight! (by delta777jet Oct 22 2013 in Aviation Polls)
Fly BG DC-10 On Special Flight! Part 2 *Update* (by delta777jet Nov 28 2013 in Aviation Polls)
I thought it could help to start a new one since apparently, bookings will be possible from this Friday:
Scenic tour Tickets for the last passenger flight will only be sold via our official partner in this endeavor - Ian Allan Travel whose website is at www.ianallantravel.com. This website will be updated in early January 2014 with all the details on the flight times and how to book, etc. In addition, Biman Bangladesh Airlines will be offering scenic flights from Birmingham and will be providing details on how to book directly via our website on January 10th. So do not buy tickets elsewhere, we want these tickets to go to genuine aviation enthusiasts.
I don't remember reading anything on the date, so I apologise in case this is just a repeat of old information. (source)
That's it for the moment, fingers crossed!