What device was this captured on, and where in the world was it taken? Hard to say it is testing anything without more details, ie is this the app sign-in screen or Web-based? Can you provide more info?
Certainly it is a cleaner and more aesthetically pleasing look though.
Hi, author here, don't usually [ever] comment on my own work here - but am interested to hear if other devs have had similar or contrasting experiences working with LinkedIn.