Does it seem odd to anyone else that it is the "rebooted" Bond's third movie in and, if the report is true, he's considering quitting? Especially since they went to such lengths in the previous two movies to establish him as being "new" and/or becoming the Bond we know.
Yes, I thought exactly the same. It's a little reminiscent of The Dark Knight Rises and how it is rumoured to jump ahead 8 years from TDK, with rumours of Batman having retired in the interim - a mere two movies after he Began!
I have some doubts about the veracity of the 'trailer description' (though kudos to whoever spotted and posted it). As has been said, seems to have a lot of footage for amovie that hasn't been filming all that long. Like the supposed script for Man of Steel which recently appeared online, it does sound like something that could be put together by someone who had been keeping abreast of rumours about the movie's storyline and characters.