Still waiting for the 720 black update in Saudi Arabia. I don't think Nokia updates their release dates on their site because it still says coming soon for India.
Why not ask Nokia? Not sure how Saudi works but lots of the hold back elsewhere is due to carriers. I know that some places carriers are not an issue so it could be something else. Possible government regulations or whatever.
As to why the website isn't up to date, only they can answer that.
I also noticed nokia's site isn't updated I think for more than a week now. I've been checking the site everyday since the last week of January coz I thought everyone will get the update by the end of the month.