I'm glad to know that the previous two posters were focused on the graphics preview, rather than the game of Chess. All they had to do was scroll up to the beginning of this thread and make a comment.
All right. Let me give everyone here something other than graphics to look out for:
Does the knight actually become a horse?
Does the rook have people living in it?
Is the board really an undersized floor tiling?
What happens if the pawn falls on the floor?
Let's keep in mind that Apple's version of Chess is sufficient to the experienced and well-performing chess player. Difficulty is one thing to keep in mind.
How about stats? The link I previously provided goes to a site hosting Sigma Chess. The game keeps nearly every statistic under the sun throughout the game. Some examples:
-->In progress score
-->Node counts
-->Nodes per second
-->Difficulty levels ranging throughout the proper 2500 = maximum ELO scale (I think that references the ELO scale for most computational sports games)
Other things that Sigma Chess has that Apple's version of Chess should consider:
-->Different board sets
-->Custom board designs for 2D and 3D
-->Customize your own board color
Now, no more complaining of the graphics provided in the screenshot of Apple's Chess, which, by the way, is in beta mode. We don't want to attract graphics trolls because of this thread. But now that I've said so, I bet you someone just got an idea.