new firmware update makes windows phone 7 unusable?

my friend has a wp7, it bad, i think, i deeply love my iphone, lol...ok, let's go to the subject, my friend is look forward to the update, however, i read an article said that the latest firmware update will make wp7 unusable, a brick? funny, isn't it? anyway, i just want to confirm, then i can advise him to stop and wait the full-blown one.
 
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