So this was a neat series that is only available digitally. It was set to explore what Thane and Ebony Maw have been up to since we haven't heard from them since Infinity ended earlier in the year. This comic also contains a lot of Thanos goodness, so much so that you would think it was written by Jim Starlin. There's also some Ego the Living Planet and Black Order thrown in there for good measure if you are interested. The biggest developments were as follows:
spoilers:end of spoilers
Ebony Maw may just be a figment of Thane's imagination as it seems he died during the battle with Ego. It's not entirely clear as of yet.
Thanos was once able to beat Ego by going deep to his core and retrieving the Galactus Engine and using it against the Living Planet.
Only Thanos and Thane appear to be able to see Mistress Death.
Thane has accepted his role as the son of a tyrant and appeared to take some sort of power from a cube device that melded to his skin.