A sneaky someone found a link to the iPhone software v2.0 before it's been released here in the US! You can download iPhone software v2.0 here
Software build 5A347
NOTE: If you are using Safari to download this, it will uncompress and dump the original file into the trash. The original file is named iPhone1,2_2.0_5A347_Restore.ipsw.zip You need to retrieve the file from the trash and rename it. Simply remove the zip portion of the file name.
Before you update, please read Apple's support document: Updating and restoring iPhone and iPod touch software.
To install the update, simply connect your iPhone to iTunes then go to the summary screen. Hold down the option (alt) and click "Check for Update". Then select the file iPhone1,2_2.0_5A347_Restore.ipsw.
Be sure to make a backup of your phone! The update takes about 10 minutes.
