Sasser's post gives a great intro to the importance of resolution independence (keeping UI elements smooth and silky even as more pixels are required to render them on denser displays) and explains what's cool about the patent application: Apple developer Mark Zimmer (inventor of Fractal Design's natural media drawing app Painter) has built a theme creation tool that actually works up buttons, scroll bars and other eye candy via a procedural description, instead of bunches of pixels. Want a higher resolution display? Boom -- the markup is run again with the denser target, and welcome the new hotness.
Cabel believes we'll be seeing the fruits of this labor real soon now. Must be later today!