While there is no mention of the wi-fi iTouch draining battery problem, let's hope this issue is being addressed in the new iOS update.
So far, the iOS 4.3.2 update is said to address some bugs, security holes, and a few "enhancements".
I will say that by turning off all push notifications seemed to help improve the life of my iTouch battery. Sadly, the battery is still not performing like it was prior to the 3.1 update. I am hoping that this issue will be addressed by Apple soon.
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