Mixamo has announced that a collection of its animations and 3D characters are now available for free in Unreal Engine 4.3.
Unreal + SpeedTree
Unreal Engine and SpeedTree allow for these beautiful outdoors shots to run in realtime.
Substance in Unreal Engine 4 Tutorial Series
Allegorithmic have created a tutorial series that covers how to use Substance with Unreal Engine 4.
Unreal Engine 4 Offered Free for Schools
Epic Games now offer educational organizations free access to Unreal Engine 4 for faculty and students.