Not being first is one thing, but the delay on this is absurd. If you continue to have such delays in the future people will no longer respect your publication, nor take you seriously. I don't really care one way or another, but it is something you should be aware of. At this point I'm not sure why you would even do a review. It's almost better if you didn't because it has taken so long.
That was my point, I don't want to read a xbox 360 review now that Xbox one is out. At some point in time a review even "detailed" is just too late.