Wow! Thanks for this Epic! Been waiting so long for some more Unreal Blender Luv! 
Importing Skeletal as well as static meshes into UE4 has gotten easier & mostly can come import straight into the engine now, although sometimes a painful process.
Unreal has included base animations in the engine that I actually like & have used via retargeting, although thru some out of the way methods.
[Questions]:
-(If not covered in stream)-
1)- Is there a method of Importing FBX from Blender to UE4 that allows retargeting to the Base Skeleton in Unreal Engine directly?
2)- Will there ever be an import option for .Blend files?
3)- I know the ART Tool was created for Maya & not directly by Epic but will there ever be something similar made for Blender or something similar included inside the actual Engine?
Thanks & Thank You for this Stream !!!
** Before Replying to Thread ! ->These Questions are for the stream & I am aware of most information and work-a-rounds found on the Internet & on these Forums. **