What is up with delta.com today?
I'm getting different versions that appear to be an updated layout / UI to the booking page?

Earlier I had a new version show up that had a different layout that showed the "boarding zone" colors, and to see flight details I had to click and wait for some annoying pop-up to display.

Now I go back in and its the older version.

Like most cases, not sure what they are doing but I didn't exactly like what I saw in the "enhanced" version they briefly rolled-out.