I have not had a chance to read this whole thread, so my bad. But the reasoning for the 2-year release date announcement (usually it's only 1 year or so isn't it?) may be is to help force the studio sale.
"Hey look, a new Bond movie out soon so buy the bloody studio already!"
The result surpasses all expectations from one of America’s most celebrated authors: the adventure of Ian Fleming, the complexity of Michael Crichton, the surprises of Stephen King, the thrills of Peter Benchley, the pulse of John Grisham.