upgrade/jailbreak to 1.1.2 without losing apps?

[KFCTR]

Alright, I have iPod Touch and jailbroke it. I'm all set, only that I want to upgrade form 1.1.1 to 1.1.2.
1) What good things do you get from 1.1.2
2) Is it possible to upgrade without losing 3rd party apps

Thanks in advance!