Kon has released illumine replacement icon set and UI theme for jailbroken iPhones. It's his first theme and is professionally done. One thing you may notice — icons are very sharp, sometimes you may think too sharp. But when you look at these pixels on your iPhone or iPod Touch — they are sleek and sexy. Feel free to download.
All are PNG for native Apple applications and some popular staff from App Store and Cydia. Package even contains PSD template, so you can create your own icons.