About 5 yrs ago I had our mx FAA guy in the JS. I asked him if he had any good rumors. He said in about 5 yrs we would get another type.
so there's that fuel for the fire

We will buy any airliner that has an overhead panel that looks like this.

2030. I am willing to take that bet .

No 787. 777X only...

Oooooooooh. That’s the reason we haven’t gotten a widebody yet! Yes, it makes perfect sense now. It’s just delayed.

More likely to be 707.

I joke with my class that they'd rather pull -200s/300s/500s out of the scrap yard than get a different type.

We will get a new type around 2040, but it won't be the B787. It will be whatever POS Boeing puts out to replace the B737. Likely with the same FMC software in use today...

And the Flight Attendants will still not have a control knob for the cabin temperature.

Seems optimistic, I don't think the Max will be certified by 2040.