One more... T430u from Lenovo it will be the other Corporate Ultrabook from Lenovo.
(I work for Lenovo, trying to get confirmation on IPS on either the X1 or T430u)
T430U: From Lenovo (your!) website - coming soon. It says September, but we're already just about through September.
It's also a little heavier than the X230, not as much RAM (8 vs. 16GB), but it does have a slightly larger screen.
At the moment, I'm inclined toward the X230. Any compelling reasons to consider the X1 or T430U over the X230 in your mind?