Canon in Star Trek is basically an opinion. Even the creators/producers can't agree on what is and isn't canon. People from those said producers/creaters to directors, authors, writers, actors and other people affiliated with the series, will give you official sounding explanations of what is/isn't but the fact of the matter is none of it's consistent.
So canon's what you want it to be. If you like that new Trek game and want to incorporate it in your universe, go for it. If you didn't like that new Trek movie and don't consider it part of it, go for it. People are intelligent enough to figure this out for themselves and don't need others to make official statements to define it when there's clearly no consensus among themselves anyways.