There is for example https://ifan-display.com/product/1-2-inch-round-transflective-tft-lcd/ which is a round 240 by 240 pixel display with relatively small borders. At 1.2" it is a bit small but generally square 176x176 pixel Bangle 2 apps would fit in this with only a few pixels cut off at the corners. So there would be a way to use the "legacy" apps without changes on a round display.
Personally I like square better just for ease of app development.
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
There is for example https://ifan-display.com/product/1-2-inch-round-transflective-tft-lcd/ which is a round 240 by 240 pixel display with relatively small borders. At 1.2" it is a bit small but generally square 176x176 pixel Bangle 2 apps would fit in this with only a few pixels cut off at the corners. So there would be a way to use the "legacy" apps without changes on a round display.
Personally I like square better just for ease of app development.