Google is once again testing using a carousel design for the local pack again. They tested an alternative form of this back in March 2017 and they are testing it again now.
This was spotted by Chas Henry and posted on Twitter.
Here is what the new test looks like:
This is the normal list view:
Here is what the 2017 test looked like:
Mike Blumenthal wrote up his thoughts on this over here.
Forum discussion at Twitter.