Seems like everything is more or less "full steam ahead" with regard to mods and repainting so far? I wonder if that will change soon... Delta announced they were suspending mods (which IIRC is mostly just the 764 fleet at the time being) while parking a ton of widebodies.
I also hope the new high-J 763 configuration and the CR5s are still viable in whatever economy emerges from this pandemic. What looked like a great decision to add a bunch more premium seats not very long ago is now looking like potentially poor timing.
There could be a suspension but my understanding is the reason the mods continue is because the money has already been spent, the necessary equipment (minus the aircraft) is already there either at HKG or XMN. Lastly the maintenance companies have already been paid for some of the work. I would imagine that once the current inventory of supplies runs out at XMN and HKG, then UA would most likely suspend the remaining Polaris/PE modifications.
If I had to estimate I would say the 789s are probably done till 2021, the 788s depending on remaining inventory we may get 1 or 2 more frames into XMN then they are probably done till 2021. I believe there is only 1 PW 77E (not including the soon to be domestic conversions) still flying around with IPTE, and 3 or 4 GE 77Es. UA probably will finish the IPTE line by getting the last PW frame into XMN. I believe there are 3 GE frames with diamond seats still flying around, UA might have enough inventory to get 1 maybe 2 of those frames into HKG.
There are seven 763s remaining, they are some of the oldest 763s in our fleet. I would guess UA might suspend the 763 line at HKG because these 7 remaining frames were originally schedule for retirement. COVID-19 might cause UA to rethink that decision especially seeing that UA expects the fallout from COVID-19 to be felt for months if not a year or more. I don't believe UA will make a decision now about these 7 frames but in the coming months I think these 7 frames might find themselves again on the retirement list especially if the remaining 767 Polaris inventory at HKG can be placed on the 764 fleet.
From what I'm hearing here at Willis is some people don't believe the industry will fully recover from this until 2022 if that is the case I think the 7 oldest 763 will be retired.