Yup. Boeing likes raked wingtips-----the 764, 772LR, 773ER, 787, and 748 all have them instead of winglets. Boeing hasn't designed a plane with winglets since 1989. (though newer 737s almost all have them now, they are not part of the original 737NG design).
Generally--they'll retrofit a winglet, but if starting from scratch they want to rake the tip. I figure it also can't be added later, or they'd have used the 764's tips to retrofit 762's and 763's.