It has a link to news items, which includes this:
These changes are being implemented to bring the layout of the
website up to the standard set by
www.weather.gov, released fall
of 2012. The new website will streamline the user access to the
site and provide a common look and feel for the web pages. The
new web pages still use the ADDS database and products. The GIS
maps introduced in the fall of 2013 are now the primary displays
of data replacing the Java applets. The design provides the same
functionality on a tablet as it does on the desktop.
The legacy web pages will remain on the web site until March 25,
2015 to allow users to transition on their own and not break
bookmarks.
You can find a tutorial on the changes to these awc pages at
new.aviationweather.gov/help/tutorial