Any new word on when this will be updated?
The DLC Brigador Modkit & Map Editor are still 1.5c.
We're in the process of fixing this this month.
Short version as to why it was non-functional for so long is because the Blood anniversary update created new items in the game's assets folder, and this made the unpacked assets in the modkit DLC non useable (meaning a new assets folder would need to be created). Or in other words the game currently live is 1.62 but the modkit tools were still stuck in 1.5c. In addition the Blood anniversary was staggered in its release.
So rather than engage in the leapfrogging process of updating the modkit, only to break it not once but twice and have to repeat the update process more than once, our attention was instead focused on supporting returning and new customers that revealed a number of crash-on-launch bugs within the main game itself.
TL;DR modkit tools are returning by end of October