If you're in the UK, you can pick up Fear the Stars, book 4 in the Chaos Queen Quintet, TODAY! What are you waiting for?!
If you're in the US, you'll unfortunately have to wait until the 18th. But that's still soon! REJOICE!
The UK blurb is even better than the US blurb imo:
You can check out Fear the Stars on Amazon UK here.IN THE PITILESS VOID, EVEN THE STARS ARE NOT WHAT THEY SEEMMany forces converge on the great city of Triah, bent on its destruction. By sea, Empress Cova of Roden sails with her armada, determined to bring the rival nation under her yoke. From land, Winter, the Chaos Queen, brings her tiellan army, set on revenge. And their advance brings a yet more terrible army still: awoken by the Chaos Queen’s powers, daemons mass on the border between worlds, waiting for a way in.Caught between the encroaching foes, a small group holds the key to saving the Sfaera from destruction: Knot, the former assassin; Cinzia, the exiled priestess; and Astrid, the vampire-child. But the only way to do so is to step into the Void beyond worlds—from which no one can return unchanged.
Or you can pre-order the US version here.