Google Maps is rumored to get a UI overhaul next week. According to the Google Operating System blog (an unofficial Google blog), the new interface will nix the sidebar and overlay all the information on top of a full page screen.
Additionally, Maps will now allow users to filter local search results by top reviews or what people are recommending in your Google + circles.
The blog doesn't mention where the screenshots or information came from, however the timing may make sense as the Google I/O conference will also be next week.
We have asked Google for comment and will update with any information as it comes in.