those are 9-speed cranks. the rest is M737 8speed by the looks of it, and tasty kit it is too.
Well where does that leave me on the other post i made over chain would i need a 8 speed or 9 speed chain given that its a 9 speed crank if i am restricted to 9 speed then so be it but i really wont use the extra gears right away as its generally a lets get fit bike, and eventually venture into something more, i will be fitting a 737 8 speed cassette to wheels if thats fine and will work with the crank
That kit will work fine with either 8 or 9 speed, but if you've already got an 8-speed cassette, you obviously need 8-speed shifters and it won't work unless you have the appropriate chain for the shifter/cassette. I am pretty sure the cranks aren't an issue, as Shimano still make all the parts that are essential - i.e., 7 and 8 speed cassettes, shifters and chains, but I'm pretty sure they explicitly said there was no need to continue to make 7/8 speed cranks, because the new ones were fine with an 8-speed system.
The main argument for going to 9-speed is not that 9-speed is better, because I don't think most users find that, but that 8-speed parts are getting harder to find, although my guess is that at least the lower grades of them will always be available (as 7-speed is now)