WildStar: Reloaded (29 Sep 2015): Expose now reduces Magic Mitigation by 8% (flat) for 6s + 0.5s per tier, changed from 8-24% (multiplicative) for 10s.
Patch 05/19/2015 (19 May 2015): Fixed a bug that prevented the Tier 8 from applying to multiple enemies.
Invasion: Nexus (5 May 2015): No longer triggers a .5 second GCD. No longer requires Psi Points to be instant cast. Now shares a cooldown with Pyrokinetic Flame. The Tier 8 now causes your next Assault Finisher to deal an additional 17.1% Assault Power in damage every 1s for 5s but no longer generates an additional Psi Point.