Ultimate Velketor's Labryinth is open for business. Two new boss encounters await you, as does the ability to earn Tier 8 Tokens. This new new currency will allow you to purchase up to 20 more Talent Points.
Speaking of Talents, each class now has 3-6 new Talents available for purchase. This should greatly expand your build variety.
Tier 8 also introduces the idea of Traits. Traits will further customize your talents, often adding different effects or increasing their potential.