I am booked in J on a 767-300 and a 767-400. Seat map for both flights is 2-1-2, all forward facing. The seat map on UAL labels this as "Polaris business class" but it seems that this is not actually the new seats. The website seems to only describe the new seats. is there any information online about these older seats?
It's not the new seat. It's the B/E Diamond seat. Lie flat, but last generation. Also used by AA and DL on their premium transcons (AA 321 and DL 752). As configured in UA's 763 and 764, it's pretty short with a restrictive footwell. Bulkhead seats have more room for your feet.