During my journey to Beagle Point with DW2, I didn't discover much in the way of the new "discoveries", in fact after I left the core, I came across no systems whatsoever with lagrange clouds or anything else brand new in - no biological features on any planets either.
However, the most noteworthy find I had, which was really rather interesting to me, was a system in the Formorian Frontier region which contained three undiscovered Helium-Rich Gas Giants.
In all my years playing this game, and my extensive exploration trips, I have never come across a single Helium-Rich Gas Giant. Then all of a sudden - boom - three in one system.
Then about 50 jumps later, another system with three HRGGs in, but these had been discovered by another CMDR.
On the return journey I'm going to go map these HRGGs, and hopefully I'll meander enough that I bump into some of the new content.