Long time Android hacker @Bin4ryDigit has revealed a new root method for Ice Cream Sandwich, aimed at Sony phones, which turns out to be devastatingly effective on a wide range of Ice Cream Sandwich AND Jelly Bean devices.
The exploit, posted at XDA Developers, is scripted to run on Windows but i've successfully used it manually from my Mac too. As a test I rooted a couple of ICS devices I have kicking around here (all good), as well as a bootloader locked Nexus 7. Very nice!
If you've been waiting for root for your ICS or newer device (yes, it won't work on Gingerbread) then maybe today is your lucky day. If it does work for you, remember to show your appreciation by donating. Support your devs! :)