Confirming the nature of a Samsung update, and declining it

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http://android.stackexchange.com – I find it a little bit offensive to receive a "Software Update" message on my Galaxy Note 2 that does not disclose the nature of the update (an OS update? an app update?). Judging by the timing, the chatter, and especially the size, I am guessing Samsung is pushing a 4.4 (KitKat) update, but given the lousy experience of reduced battery performance after upgrading from 4.1 to 4.3 (including giving a chance for recalibration with many full discharge/recharge cycles), I'd rather avoid 4.4 for now. My question is in two parts: a- How do I confirm that this is indeed KitKat being pushed? b- Ho (HowTos)