Apparently the Google+ team realized that sharing updates via Google+ and an XML syndication-free “What’s new in Google+” site wasn’t going to suffice
Welcome to the Google+ Platform blog! Only 6 weeks ago we launched the Google+ project to fix sharing on the Web. Since then, tens of thousands of you have expressed an overwhelming desire to build applications for Google+ -- we can’t wait to help you out. This blog will be your official source of information and announcements on the Google+ platform. Although we’re not ready to get your coding engines running, we do have some small updates to share as we prepare to open the gates.