Today we’re excited to announce the first way you will be able to leverage Google+ -- by making it possible to replace your Blogger profile with your Google+ profile.
In addition to giving your readers a more robust and familiar sense of who you are, your social connections will see your posts in their Google search results with an annotation that you've shared the post.
As long as you are prepared to use a Google+ profile with your Blogger account, you can send blog updates to your followers.
After you login to Blogger, simply edit your profile. There, you'll see the advice
Connect Blogger to Google+ : Use your Google profile and get access to upcoming Google+ features on Blogger. Learn more Get Started
After you upgrade Blogger to use your Google+ profile, go to the dashboard Settings - Google+, and select "Prompt to share after posting", for automatic sharing. Or, you can use the Posts link "Share" for any post, when convenient.
I suspect there will be several possibilities with this new feature, so watch this space for updates.