The website said something about interdimensional AE stuff. As in it'll be a required crafting ingredient for interdimensional AE systems (i.e. Connect AE system in Overworld and Nether together)
There are also posts popping up that Logistics Pipes will be added to FTB?
That would make the interdimensional AE almost obsolete. (There was a mod spotlight from Bevo not too long ago, where he built a remote AE system by simply adding a few LP pipes. I haven't used the mod yet, so no idea how exactly it worked. )