Weird. On the first to Ashburn yesterday, it said “Ashburn”

I think this reflects which trains WMATA had in "cold storage" prior to the 7000 series issues. They probably never got the programming update that converted Route 772 to Ashburn.

I stopped and toured all of the stations on the return trip Ashburn after riding the first train to Wiehle - Reston East and noticed two train destine to Ashburn displaying a Route 722 destination sign.

Basically what is happening, WMATA has not upgraded the software that translates the destination codes to station names on the cars displaying Route 722 instead of Ashburn. At the time the destination codes were revised for the new stations on the Silver line, Ashburn was still being identified by its Route 722 planning name.

Side note: Destination code 34 has never been changed sense creation of the table of destination codes back in the early 1970s, as the 1k cars were delivered from Rohr Industries with Dulles Airport in white letters on a black background on their old school sign rolls. It is also the only destination in the code table that was shown as future on the 1968 Adopted Regional System Map. I have been told that the Dulles Airport destination sign was included on the roll signs as an incentive to get political leaders to support and build the line shown as future to Dulles Airport.

Likely correct. With all the shit WMATA has has been dealing with over the last 15 years, that one was nowhere near top of the priority list.

It does make me worry if there's other things that were missed on those units though.

Non critical things will not prevent the cars from being operated. Critical things will.

I'm sure folks will probably disagree with me (especially those in Loudoun County), but for some reason I like the "Route 772" name better.

Unrelated, but I noticed that the 7Ks got a programming upgrade this past weekend. "Largo Town Center" is now simply "Largo" on all displays and on the automated announcement system. I am assuming PG Plaza and Tysons Corner have been changed as well.

There are no destination codes for Prince George's Plaza or Tysons Corner, so there was no change there. The sound files played by the announcement system are unrelated to the station names in the destination code table.

I was referring to the physical next-stop indicators on board the trains (not the exterior LED displays)…unless they are still showing PG Plaza/Tyson’s Corner instead of the new station times on the interior displays?

I also noticed on the legacy fleet’s interior next-stop LED displays (when they actually work) “DOORS OPEN” is now displayed next to the three <<</>>> displayed upon arrival. Before “<<</>>>” were just displayed without any verbiage.

I can confirm that "Tysons Corner" is now simply signed as "Tysons"

Is it actually possible for the 2/3/6ks to display a silver color aspect on their LED screens?

The 2, 3 and 6k, cars don't have the LEDs needed to display the Silver line color on the side and front destination signs. 164 of the 7k cars were procured to increase the fleet size for Silver line.