This is first exclusive unofficial list of improvements in
iPhone Software Update 1.1.2:
• Fast and operative work - a delay during photo or video viewing is absent;
• Applications now works faster, including 3rd party apps
• 95% of applications for v1.1.1 version works on v1.1.2;
• Quality of iPhone′s microphone and dynamics has improved;
• AppSupport have made [...]

Recently i have found in
Installer.app amazing software called very simple - iRadio,as you already understood from its name, this utility searches for lists of Internet radio stations and provides direct listening of your favorite radio station.

Main convenience of iRadio, that music is sorted on genres. All styles - from slow smooth Jazz or [...]

DevTeam group has informed about update of famous utility called Jailbreak 1.1.2 which now works with iPhone/iPod Touch ҝ.1.2. You can download this utility
HERE, some additional information
HERE.