Thanks for the update on the Rating Summary issue.
As for having the Rating Summary automatically updating when a user submits a review, we would like to propose that this be added as a new feature.
Within just two days of adding your plugin, we have had two users tell us that they noticed that the summary was not being updated.
Just as the Latest Reviews block is updated when the user submits a review, we would like to see that the summary is updated too.
Thanks for the great plugin!