I created a new warrior (Bally) to experience the new content.
I did note that the Warrior Quests in Akanon seem to start differently. I completed all tasks up to the armor.
As far as new content, I could not see a difference. Granted it has been at least a year since I had a low level toon in Steamfont. Perhaps the drop rates have increased. I explored all the areas except the tunnels. As I only got to level 10 I did not try to enter the tunnels, so it is possible that the content is different in there. And at level 10 I think one would be crazy to not go to BB, as that is where the groups are. The entire time I was in Steamfont, I was the only person in the zone except for the occassional traveler passing through.
Overall, I do not see that the zone has improved much. EXP modifier was 10% and quickly dropped to 5%. Steamfont remains a zone to go to only if the better zones (NNP) are over-crowded from my experience.