Pyronox said:
SC2 is just a visual upgrade. I doubt it will be affected by gameplay changes like CSS vs 1.6
You would think the fact that it's a sequel (where CS:S is a remake) and the fact that it's 10 years later might make them put some changes in. By all means, it will be similar, but there are some new features (like something about hiding/camoflaging), and the new units etc will mean they'll have to redo all the stats, so it will play a little differently. I would imagine that SC skill will still largely transfer to SC2.