"Google's +1 button is coming tomorrow." The release news was tipped by a launch partner named New Venture Communications to TechCrunch, and later it was confirmed by Google saying that "any site will be able to to add the +1 button code to their site as of tomorrow, through a self-serve process."
The company says a full blog post and more details will be posted tomorrow.
"The +1 button is designed to help publisher's content stand out in search results by giving users the ability to +1 content. The more chances users get to +1 content, the more likely publishers' URLs are to show up in search results with +1 annotations. This helps users highlight which results are most useful and helps publishers better engage with their audience."
You can expect a self-serve form like this:
If you are registered with Google Webmaster Central, you will have access to button-push analytics, similar to this:
[Thanks, TechCrunch, SEL]