Matte 8 by /u/pupsic0la.
An icon pack containing 100+ icons inspired by the simplicity of iOS made cleaner using shadow and depth as well as simple glyphs and a cohesive pastel-esque color scheme similar to Flat 8.
Requires Winterboard and Icon Bundles which can be downloaded for free from the Cydia default repos.
This theme is optimized for iPhone 6 only at this time.