Whoaa!
Hold on everybody! Look at Life on Mars that allegedly had 2 endings filmed. In the end it was revealed they had only filmed one, and used the story to throw the press off the scent and to try and get them off their backs.
For me, the use of "BBC Wales Staff" is exactly the same as " a source told us"....or a "a close friend of...."
Nah, if anybody in BBC Wales has leaked this then RTD is part of the plot and is using this a s way ( a well established way) of generating publicity for the show.
None of those will be the end, and my own view is the ending will be a cliffhanger that won't be resolved until the Christmas episode. This will then generate more publicity and rive the Xmas ratings show through the roof.
Or am I just too cynical?