Spoilers for Stranger Things Season 5 Vol 1 (First 4 episodes, S05E01 The Crawl, S05E02 The Vanishing of…, S05E03 The Turnbow Trap, S05E04 Sorcerer)
First, yes Season 5 Vol 1 was released about month ago (on US Thanksgiving), but I didn’t see any other discussion threads, and I just finished watching it last night.
Season 5 Vol 2 releases on Christmas and Vol 3 (the finale) on New Years.


Re Holly & Devin.
The show has never been shy about adding new characters, and technically Holly isn’t new, but her being an actual character had been great this season. It’s given Mike a chance to be a big brother. It’s given the whole Wheeler family a chance to shine. Her story adds a fun mystery that syncs up so well. It’s sort of like with Erica, starts as the (annoying) little sister, jumps right into the group proper.
And Devin. Little shit turned hero. Tell all the Whatsit kids to remain calm and then giving them a whack when it’s their turn to leave. Seeing a Demogorgon really changes someone.
Holly’s actress did a great job too, particularly for so young an age.