New UI look (and features?)

mmmh, yesteeday the Avast Free UI looked different as for today, some new buttons are shown with “new” above. The scans looks different, especially the cleanup scan and its summary I am pritty sure they looked different…

what is going on?
is this only my imagination?
no programm update was done

It is possible to change the UI without having to do a full program update. This has been taking place over the last week or more.