Add to Cart Shape Update
On the PLP, each item has either an Add to Cart button, a Choose Options button, or a Sold Out button. Shown in the screenshot below:

These buttons have the option to be a pill shape or a rectangle shape. The setting to control the shape can be found in the Collection settings in the theme. Shown in the screenshot below:

Similarly, on the PDP, the Add to Cart button can be either a rectangle or pill shape as well. Shown in the screenshot below:

The settings to control the shape of the buy buttons on the PDP can be found in the Buy Buttons block settings. Shown in the screenshot below:
