So the 2.0 software/firmware has officially been out for only a few hours but I was able to upgrade my phone yesterday through some back-door means and the upgrade process went very smoothly.  I've heard a few reports of failed upgrades so far this morning, but they've been few and far between.

The first impression I got from the 2.0 software was the ease of setting up ActiveSync.  All you need (for Shared Exchange at least) is your email address, password and username (which is generally your email address) as well as your Shared Exchange server name.  It was actually easier to set up the iPhone with ActiveSync than it is with a Windows Mobile device.  No need for a truncated-to-16-character username for this guy!  Instructions for activating your Shared Exchange mailbox can be found here.

 The App Store has some pretty interesting applications too, I've already installed a good number of applications onto the device and, so far, they've all been free.  I've got Pandora (online music station), JOTT (audio notes to self that are transcribed and emailed to you), and ShoZu (easy photo emailing to sites like Flickr).  I've also installed a few "fun" applications including a super-nerdy lightsaber application that uses the accelerometer to know when I'm moving the iPhone around.

It's too early to tell how the battery life will be affected by ActiveSync's push email, but I don't expect that it'll be too bad.

Again, I've only been running 2.0 for less than 24 hours so there's plenty to still dig into, but so far, I like it!

**UPDATE**

I found out about a VERY cool little add-on that makes me very happy.  You can now take screenshots directly from your iPhone:  Press and hold the "home" button then tap the power button on the top.  Whatever is on your iPhone's screen will then be saved as a picture on your Camera Roll to be done with as you please.  Me, I'm taking screenshots of the ActiveSync setup and will be uploading them to our KB article soon.