I'm actually surprised to see the refurbished 763s in service as early as May. As I have flights booked as far out as Sept. right now, I'll switch all seat assignments I already made from 11A (best coach seat on these birds IMO) to 12A on all flights just in case I get a plane with the new config so I won't get displaced to somewhere less desirable.
While IFE would have been nice, I can live with the tablet (in J) and if sitting in coach rather prefer the old seats sans IFE - they are just so much more comfortable than than those new 'slimline' seats. I place more value on seat comfort than I do on IFE.
BTW, Here's the new seat maps: