Any discussion about the legionnaire and walking fortress?
No. It was focused on changes brought with the new SP DLC. We did not see play of the DLC, only the changes and how they affect SP overall. Hinterlands was shown, adding some of the trials, which made the game harder. If you are planning on getting this DLC probably worth a watch.
Some additions:
Trials - in settings, you can toggle on/off various trials. ie. health potions do very little, lower level enemies now show up at your current level. These have been added in order to increase the difficulty for players who now find Nightmare too easy. enemy units are now tougher in terms of immunities, and also receiving attributes they do not normaly have. Using these trials allows for higher chance of greater loot. I believe the idea was the more trials you have in operating the higher chance of greater loot.
Second ability upgrades - each ability has an available upgrade, which we know. there is now a second one. you can toggle between the two upgrades out of combat, setting them for use in certain situations.