I have written small tweaks and small apps, but nothing published.
Reverse-engineering is hard for everyone, so I want to start sharing my findings and maybe even decompiled framework pseudocode in this wiki.
|iPod touch 5||iPhone3,1||32GB||8.4||Yes|
|iPad 2||iPad2,1||16GB||8.4||No (but it could be)|
Currently reversing MobileMail.