A little tidbit from the Apple announcement today:

10:48 PT - DM: Let's talk for a minute about the software on the devices. New iPod touch has 2.1 software. If you have a first-generation touch, you can get version 2.1: it's free upgrade from 2.0. If you haven't, it's $9.95 to update from 1.x. The updates are available today. If you have an iPhone, there's a 2.1 software update as well. It's a big update: it fixes lots of bugs: fewer call drops, significantly improved battery life, not as many crashes, backing up to iTunes is "dramatically faster." And some new performance enhancements as well. Free to all iPhone owners, and it'll drop on Friday.