Monument Valley 2 wasn't only announced during WWDC 2017 - it's out on iOS right now
No, really
Well, I wasn't expecting that as the folks at Apple were just running through the App Store's new redesign, they casually dropped Monument Valley 2.
WELL THEN.
"Guide a mother and her child as they embark on a journey through magical architecture, discovering illusionary pathways and delightful puzzles as you learn the secrets of the Sacred Geometry. Sequel to the Apple Game of the Year 2014, Monument Valley 2 presents a brand new adventure set in a beautiful and impossible world. Help Ro as she teaches her child about the mysteries of the valley, exploring stunning environments and manipulating architecture to guide them on their way."
Holy mother of God it looks gorgeous, and I'll be damned it looks like it's available right now on the App Store for £4.99/$4.99.