Laya White (via Twitter @goldenlady) says it well “Ooooh….updated interface for transit directions on Google. I can hover over different choices and see the routes on the map. Nice.”
I really like this little change. If you want to see if there are any route alternatives (other than just later departures) for a particular query, now all you do is hover over each of the returned trip options.
Also, note that the “hover” feature works when comparing multiple suggested walking routes, and also works when Google Maps returns multiple suggested driving routes (also a new feature).
See screenshot for transit directions in Portland, Oregon, below.