Our shop has had 4.8 for a long time now and in the recent "badge period" 5.0 and still we have 4.5 stars showing (star drawing under the name of the shop) and 4.7 showing under our listings.
@ElGranero The Star Seller badge period is based on the previous 3 months. Your overall shop feedback is based on the past 12 months.
It's really strange. So you can be a star seller or have the "rave reviews" badge and at the same time have 4 stars ? It's very illogical.