We were hoping to be the first to integrate Google+ into our service. Unfortunately, we're chomping at the bit a little more than Google is.
Google's current Google+ API only offers "read only" access. This mean it does not let third party tools like Hootsuite, Postling or other social media management tools write to its database. Until it does, we will not have an automated process to publish your posts to your Google+ business pages.
This feature is on Google's development roadmap and we have signed up to receive notification from Google when it's ready to go. We look forward to adding Google+ to your standard service as soon as we can.