Forget about the 10 or so new products announced by Google & Yahoo over the past two days, including Google Earth. Google just announced an API for Google Maps. You got to love the title they used at the GoogleBlog to introduce this; The world is your JavaScript-enabled oyster.
I guess this is in reaction to all the Hacking of Google Maps.
Forum coverage will be widespread, but I took the liberty to post a thread at DigitalPoint Forums.