Yeah, I noticed this earlier this morning as well (for devices/views which show the year). So it could be just the presentation in the edit window.
On a possibly related note, when I look at older entries where I previously edited the date, they all now show a date that is one day earlier. E.G. If I had previously entered a date of 2018-04-20, opening the edit window now shows 2018-04-19.
