Full details were posted by Blogger here: Update to Google Friend Connect.
I know some people don't want to register for a Google account, so I've provided other options on my blog. Beneath my followers list, there is a form to subscribe via any email account. The emails are sent out once a day when there is a new post, but don't contain the formatting and colors present on the blog web page.
I've also provided a button to subscribe via the Feedly reader.
For other bloggers out there, what options are you providing? I don't think this has affected me or my readers that much, but let me know if there are other reader options you'd prefer.