Mrrobot112
Is it possible to know which characters will be getting viewpoints after Part 1?
Brandon Sanderson
All the main characters get viewpoints, though there aren't a lot of them for Szeth or Jasnah. (Technically, she isn't a main character of this sequence--but she has a couple viewpoints here and there regardless.) The structure is a little more like Book One, with one "A" plot that runs the entire book (in book one, it was Kaladin in Bridge Four) and two "B" plots that each are in half of the book.
In this book, parts 2 and 4 are one of those B plots and parts 3 and 5 are the other one. (In book one, the first B plot was Shallan and the second was Dalinar/Adolin.) Like the previous books there are two "C" plots. One being a flashback sequence for one of the characters (in this case two) and one being a sequence of interludes.
Venli's flashbacks are weighted toward the back half of the book, as it felt better to have them in quicker succession, since she's sharing them with Eshonai.
The A/B/C breakdown doesn't start happening until after Part One in this book, though. So I'd say wait until you get the book. Anyone you don't see in Part Two will be in Part Three (and a group of people in Part Two won't be in Part Three.)
I do this deliberately to keep the number of viewpoints down per section, as it helps with the complexity a little. Epic fantasy tends to have a problem of viewpoint sprawl, which has made problems with the pacing. This kind of structure is how I combat that in the Stormlight Archive.
That doesn't mean characters don't have a part in the story, even if they aren't getting viewpoints. For example, Dalinar is in multiple chapters in Part One, though he doesn't get viewpoints in this part.
Glamdring804
Since this is a front half book, can I assume that this doesn't include Ash and Taln?
Brandon Sanderson
That is correct. No Ash/Taln viewpoints in this book, though they do appear in the text briefly.
ascraz
Do we have any view points from moash as well? I really enjoy the character.
Brandon Sanderson
There is at least one Moash Viewpoint in the book.