It looks like the traditional 7 Pack for Local Business Pages have now become a 3 Business Page Snack Packs.

Every query I have looked at is displaying this new local page snack pack, so I am pretty confident this is a rollout and not a test.

Update:
24hrs after this rollout, general consensus has termed it “local stack” as the snack pack that we see for hospitality sector looks slightly different.

 

7 Pack vs 3 Business Snack Pack

 

It all makes sense now with the removal of the Google+ Page link from unverified pages over the past week.

 

All business pages have the Google+ page link missing

 

 

Verified and Unverified Display

 

Click on a Verified business page in the local stack and you get all the business information.

 

Click on an Unverified business page in the local stack and you get a basic info box.

 

 

Waiting on confirmation from Google, but my money is on rollout.