It seems that this will not be an automatic process, but will require web developers to tweak their applications slightly, so they are in accordance with the new standards that Google is proposing. However, Google is hoping that this will be possible with minimal modifications to existing AJAX-based applications. Although Google has not specifically stated how web developers will know if their modifications are correct or not, they do mention that there will be a way to verify what parts of your AJAX-driven content are crawlable, perhaps through Google Webmaster Tools?
Although this proposal and implementation are still in its infancy, it has been a long time coming in my opinion. This will no doubt make the web a better place. Let’s hope that other search engines will soon follow suit.