The magistracy already has the Vengeance-DC from TRO:P. Is there another PWS for the Canopians?
Its kind of confusing...so hold on while I try to explain :)
The XTRO series was designed to show ultra-high tech, cutting edge units. Units that had very very small scale production, were considered test beds of technology and production.
TR:Prototypes then came around, and some of the designs from the XTRO series were revamped to make them slightly simpler and easier to produce on a useable scale.
The problem of course, is that CGL's release schedule is...fluid, and TR:Prototypes was released before the XTRO series was finished, so you have in some cases (Clan and Periphery so far), the finalized design released in TR:Prototypes, before the prototype/test bed version is released in the XTRO.
So. In TR Prototypes, the MoC got their Production variant of the Vengeance-DC PWS. In the recent XTRO, they got their original, testbed version of the Vengeance DC.
Which, to be honest, isn't really any different. The main difference between the two seems to be that the original Danai from the XTRO has some Enhanced LRMs in place of the standard LRMs that appear on the production variant from TR:Prototypes (and of course a difference in cargo to cover the weight of the Enhanced LRMs).
Oh, and slightly more interesting, the Bay personnel on one is split between Bay personnel and Marines, while on the other they aren't, but its the same numbers of troopers. Maybe another bit of errata for TR:prototypes (hell, I'm not even sure it matters).
What I'm wondering is which lunatic keeps spreading the notion that HVACs are a good idea. They're worse than Ultras, which are roundly hated in some quarters for jamming but at least leave the unit otherwise intact. They may be TR D, which puts them in reach of realms who might not be able to field more sophisticated autocannons or Gauss rifles, but I'd rather take the standards and bring artillery if I need that kind of reach. Simpler, more reliable, and it's got more of that Periphery (or Davion) feel to it.
Maybe there's a chart somewhere at CGL showing the number of times each piece of tech has been used in the XTRO series and the HVAC has been lagging behind :)