KML for Google Maps: A new feature of Google Maps enables the
display of KML (Keyhole Markup Language, the file format used by Google
Earth and other applications to share geographic information) on Google
Maps. This innovation enables data created in Google Earth to be viewed
in a web browser as a simple mash-up. Requiring no computer programming
expertise, KML for Google Maps makes the sharing of geographic
information even easier.

· Google Maps for Enterprise: Addressing the needs of the enterprise
community, Google announced fee-based licensing and support for
businesses wanting to embed a Google Maps experience in websites or
internal applications. Leveraging the Google Maps API, this product
enables businesses to map customer locations, track shipments, manage
facilities or view any other data source in a geographic context.

API is available at http://www.google.com/apis/maps/.

Source:
http://israblog.nana.co.il/blogread.asp?blog=213241&blogcode=4159376

yep, it's Google Earth's birthday in a couple of days i guess, so there are plenty of updates on the api, and Google Earth.

Ability to view Kml files on Google maps is nice.