Yup, was right about the name! OS X Yosemite mockup wallpapers!
They come in two types:
Big X & Smaller X.
They come in two resolutions:
1920x1080 & 1440x900
The reason I made one for 1440x900 (Macbook Air 13" & MacBook Pro (Non-Retina) 13") is because the X will be really scaled and it won't look that great on 13 inch screens.
Original wallpaper belong to: wallsev.com/awesome-yosemite-w…
Hope you enjoy them! If you do, leave a fav! It helps me out