I didn't see a post on this so many have probably missed it. Looks like it might be a pretty good 'tweak' not a huge nerf which is good.
Just got this note from GPG. Not for today's update but for the next one (which is likely going to be v1.01):
BALANCE- Lord Erebus Bite
Bite's Mana Cost increased, Damage decreased, Armor Reduction decreased.
Mana Cost increased from 300/420/500/595 to 350/500/650/800.
Damage and health gain decreased from 300/500/700/900 to 250/425/600/775.
Armor reduction decreased from to 250/400/600/800 250/400/550/700.