Only in Exit rows.... I have not flown on a UA 767... for 5 years?? I am not even sure where they fly other than EZE? But the 737 are in rough shape.. but at least you have E+ and or Exit rows...
When AC refits its planes its going to be amazing... now to get them to put some J seats in the 777 Currently they will have the least amount of J seat on 777.... so upgrades will be impossible. THere is where we all should be active..... getting AC to rethink how FEW J seats are going in NEW planes..

The complaints about upgrades are going to be huge!... they have NO seats to upgrade into..... also NO E+ is planned. HORRIFIC!