Last week, Google introduced the new Google+ design and with that, reviews are being removed from the Google+ Local listings.
This has been discussed since the launch and Google has confirmed it a few days ago. Elizabeth from Google wrote in a Google Business Help thread:
As you can imagine, this is a huge concern for local SEOs and businesses. Why drop reviews from local listings?
A Local Search Forum thread has Linda saying we need to educate our clients, she wrote:
How do you feel about Google dropping reviews from Google+ Local listings? Or who cares? Google+ is going to be killed off entirely soon anyway?
Forum discussion at Google Business Help and Google Business Help.