GM #144 showed us a nasty looking Eldritch Wraith and some very cool looking Eldritch Armour. Also has a link to the youtube version of the last stream.
Stream of 17th August:
First congratulations to Grava and his wife on the birth of a daughter earlier this year. Luckily he didn’t have to rush off to change her diaper, but he did dash out later to put the roof up on his jeep. At least I think that’s what he meant when he actually said:
“I have to go outside real quick. I have to put the roof down on my jeep. I’ll be right back. It’s going to rain like right now.” 1.03.36 in.
Zantai managed to drop by via his phone even though he was attending a wedding during the stream. And still managed to say quite a lot. 
Greek_Feta_Cheese :@zantai_gd will are there crucible changes planned for the xpac?
Zantai_GD :No particular changes, will probably add FG mobs to existing waves
Zantai_GD :I see Shattered Realm as a way to push your builds to their limits more so as the absolutely most efficient way to farm loot, but time will tell
Zantai_GD :It has unique rewards though, and you can earn a few skill points
Zantai_GD :Nemesis bosses can spawn at higher shards, several can appear on a chunk
VeretragnaVictorious :Zantai, can 4 nemeses be spawned at the same time like in Crucible?
Zantai_GD :They tend to spawn more spread out
DenisMashutikov :@Zantai_GD can same nemesis spawn several times per session in shatter realm?
Zantai_GD :Yup
AzTk1992 :are the portals for next level spawning always in the same location on the particular map?
Zantai_GD :Portals are semi random
ChthonicSonic :@Zantai_GD Are there Shattering Realm exclusive monsters/bosses?
Zantai_GD :No
Billaowski :@CrateEntertainment I believe someone mentioned you were going to touch on existing masteries/items in the future. Are you allowed to tell us anything about that
Zantai_GD :We call those patches, billaowski
Caerbae :Zantai_GD can you authorize grava to spoil set reroll material obtaining for us
Zantai_GD :Nothing to spoil, you saw them in the GM reveal
DenisMashutikov :@Zantai_GD will shatter realm have checkpoints, or we need start 1st Shard every time we take reward?
Zantai_GD :There are checkpoints
gilavar :Zantai, are there any plans to buff or change AAR skill?
Zantai_GD :AAR has been buffed for next update
Tividor :are you writing Monday’s dev blog zantai or is it gonna be another amateur hour smh
Zantai_GD :Monday posts are pre-written, I wrote the last one too
Zantai_GD :There was just some copy paste error involved…
Zantai_GD :Not fair to say allminoxy is amateur hour
PydraKor :can u say sth about the retaliation changes? love your game =)
Zantai_GD :Stop by Monday for news on retaliation
A typical Zantai spoiler. You’re going to love this. The new a … a…
Grava finished off by saying:
“I’m not going to be doing regular or bi-weekly yet. Pretty soon, we’re getting further along in the expac and we’re going to start doing at least once a week like we did do and maybe towards the end bi-weekly again. Keep you guys informed on what’s going on and updated with everything on the expac before it comes out.”
GM #145 on the 20th August finally revealed the 9th mastery - the Oathkeeper
and after a lot of fun with the guess the class combo names thread Evil_Baka finally guessed them all correctly.
And GM #146 showed off Virtue’s Light - an Oathkeeper Legendary set to try and get your grubby little paws on. 
And skills seen so far: