It seems TWC silently updated the Intellistar today or last night. The only major changes I can see so far, are to the radar. The Radar color looks softer, because they removed the shadow. Also, city labels have a white box around them making them easier to see, just like the National LF and WSI Max radars.
EDIT: I just checked, and the IS2 has also had a few changes done to the radar and sidebar. The radar has the new city labels and radar colors, but the radar animates much faster and smoother than before. Also, the sidebar now has a rain forecast that shows the forecasted amount of rain for the next day.