Bol A/B Tested A More Padded Button
Last year I captured this button experiment from Bol (a leading online retailer in the Netherlands). They tested a smaller button with less padding against a slightly more bloated one. It's now clear that the variation was rolled out completely - consistent with the bigger form fields and buttons pattern.
Highlighted UI Changes From This Leak
Bigger Button With More Padding
The variation contains a visible button size increase. Equally, the same variation is slightly confounded by an equally subtle color change from yellow to more of an orange yellow. Nevertheless we'll tie this as subtle evidence in favor of larger buttons.