The only update in the next few months, if there is one, will probably only be an upgrade to 32GB. So if thats really important you might want to wait.
But then again if you wait another 2 or 3 months you will start thinking that you should wait for the next big update the third gen model (no, not 3g cell service, i mean like the 3rd one).
If you really want one you should just get it, might be able to get it at a good price with all the sales going on
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