Poking around in Apple's iTunes version xml shows that there is a 2.1.1 firmware for iPod touch with build number 5F138 vs 2.1's 5F137.
It appears it is for model iPod2,1 which looks to be the new iPod touch announced yesterday.
Here is the direct link to the firmware restore file:
http://appldnld.apple.com.edgesuite...080909.8i9o0/iPod2,1_2.1.1_5F138_Restore.ipsw
I am not recommending that you try it out on your first gen touch but it is there to satisfy your curiosity.
The itunes version checking mechanism is here: http://itunes.com/version
It appears it is for model iPod2,1 which looks to be the new iPod touch announced yesterday.
Here is the direct link to the firmware restore file:
http://appldnld.apple.com.edgesuite...080909.8i9o0/iPod2,1_2.1.1_5F138_Restore.ipsw
I am not recommending that you try it out on your first gen touch but it is there to satisfy your curiosity.
The itunes version checking mechanism is here: http://itunes.com/version