Also, it is confirmed that a baseband update is present for your 3g but not for your 2g. This means 2g call performance will not change. It also means your 2g unlocks will still be possible. For 3g, expect this to render your SIM adapters useless and updating will probably prevent a future unlock from being possible.

• Enhancements to Maps
  • Google Street View
  • Public transit and walking directions
  • Display address of dropped pins
  • Share location via email
• Decrease in call setup failures and dropped calls
• Home button used to bring you to first page of apps on springboard. (Quickgold works still, but you get returned to first page if you have multiple pages at same time).
• Enhancements to Mail
  • Resolved isolated issues with scheduled fetching of email.
  • Improved formatting of wide HTML email
• Podcasts are now available for download in iTunes application (over Wi-Fi and cellular network)
• Improved stability and performance of Safari
• Improved sound quality of Visual Voicemail messages
• Pressing Home button from any Home screen displays the first Home screen
• Preference to turn on/off auto-correction in Keyboard Settings

As soon as it is available, I will post a working jailbreak guide and download link so stay tuned.

FW 2.1 is very stable. Hold off until a jailbreak is ready. It should not be too long of a wait. Also, if you are doing any unlocking, you definitely need to hold off on the upgrade because your baseband may be upgraded to a version that cannot be unlocked. 3g SIM adapters may stop working as well. In general, do not upgrade yet! I will update the site with news when it’s a good time to upgrade.

Also, iTunes 8.0.2 is out now. I doubt this will make much difference either way, but ask yourself, why bother. Just because a new version is out doesn’t mean you want it. I would hold off on this also.