Health Indications

A common complaint I found with v2's release was that the Player's own health bar gets in the way. So, by default, players no longer show their own health bars. This can be changed as one of the new options.

Status Effects
If you have the resource pack installed (new version 2.1 of the resourcepack), you can now enable Status Effects in the options. It shows current status effects inflicted on nearby mobs.
Left to right: Poison, Weakness, Speed, Slowness, Water Breathing

Current Status Effects implemented: 
Blindness
Fire Resistance
Haste
Mining Fatigue
Poison
Regeneration
Resistance
Slowness
Speed
Strength
Water Breathing
Weakness
Wither

More Options

Damage Indications:
Affect Players: Whether or not Damage Indications will show up on players or not.
Health Bar:
Affect Players: Whether or not Health Bars will show up on players or not.
Status Effects: If the Custom Texture option is enabled as well, entities will now also show the current status effects they have inflicted.