Google Changes the Cached Header Format

It appears that sometime in Jan that Google decided to change the format of the pages cached in their system depending on how the cached page was retrieved. For example, consider the page

http://englewood.k12.co.us/schools/clayton/music.html

If you search for the page in Google's index via

info:http://englewood.k12.co.us/schools/clayton/music.html

and then click on the "Google's cache" link, you will see this page:



But if you try to access the cached version directly via the following URL:

http://search.google.com/search?q=cache:http%3A%2F%2Fenglewood.k12.co.us%2Fschools%2Fclayton%2Fmusic.html

you will see this page:



Notice the font change and the difference in date format ('Jan 21, 2006' --> '21 Jan 2006').

I first noticed the change a few weeks ago. I've also noticed that Google is not always consistent with the heading change. It's possible that the format change is due to changes in different data centers.