I had seen this before, but this Kotaku article reminded me to make a post here.
Basically, it's a game-only James Bond shooter (as Blood Stone was neither a book nor a movie) made by the creators of Blur and The Club. This, of course, is not too encouraging, as I have never heard of the latter, and Blur was a bit arcadey. Nonetheless, the trailer looks interesting.
Compared to the Casino Royale/Quantum of Solace games, there are some immediate changes, namely the vehicle sequences. The main difference here is that instead of a shapeless, low-poly block during the credit sequence, the Aston DBS is featured in all its glory in a Quantum-esque car chase. Also present in the trailer are parachutes, enemy helicopters, and a boat chase.
Here are some useful quotes from the abovementioned Kotaku article: