Lorraine Luk, Daisuke Wakabayashi, and Greg Bensinger, The Wall Street Journal:
The smartwatch would be offered in two sizes, each featuring a curved organic light-emitting diode screen, those people familiar with the device said.
These factoids are, of course, merely conjecture. Two sizes? Makes sense, since most luxury mechanical timepieces have one size for men and a smaller size for women. And as far as I know this will be the first time an OLED display is used in a commercially available Apple product.