UPDATE:  Google has formally announced the availability of embedded Google Maps.  Read about it and get instructions on using this new functionality from Google’s Lat Long Blog:

• YouTube-style Embeddable Maps

As reported on the CNET site, Google Maps is poised to release a new feature next week that will allow users to embed Google Maps into their web sites;

“No coding or programming required; just copying and pasting a snippet of HTML“, a Google spokeswoman says. “To embed a Google Map, users will simply pull up the map they want to embed–it can be a location, a business, series of driving directions, or a My Map they have created–and then click ‘Link to this page’ and copy and paste the HTML into their Web site or blog.”

Source: CNET – Adding a Google Map to your blog