List of tested devices for the upcoming 5.1.1 jailbreak

Here is the list of devices that are known to work for sure :
iPhone 4
iPhone 4S
iPad 1
iPad 2 Wifi
iPad 3 Wifi

Here is the list of devices that won't be supported :
iPhone 3Gs
iPod 3G
AppleTV 3

Remains :
iPod 4G
iPad 2 GSM
iPad 2 CDMA
iPad 2 Wifi, R2
iPad 3 CDMA
iPad 3 Global
AppleTV 2

Source pod2g blog .Dont expect the jailbreak will availble soon.