The Year 4 Space Wizard slate is:

Stand-Alone:
Isaac (novella) (Allee Mead)
It's You, Isn't it? (novella) (Antony Paschos)
Crying Out For Magic (PSC Willis)

Children of Sea and Sky (Athena Giles):
Waves Take Your Bones (Athena Giles)

The Shifting Lands Series (William C. Tracy):
Intent Magic (Book 2)

The Bastion Cycle (Alex Kingsley):
Relic of Haven (Book 2)

The Unforgiving Stars (Edward Isaacs):
A New Beginning (book 1)