Yes it has 4.3. It has Knox bootloader as well if that matters. There is TWRP recovery, custom kernel by Bid Droid, custom ROM by Scotts ROM called Clean ROM V2 R2.

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---------- Post added at 05:19 AM ---------- Previous post was at 05:17 AM ----------

It and the older note 10.1 2012 version are both on list to get kitkat 4.4.2. ..no clue when it would drop but I'm sure Clean ROM will have it before it's out for mainstream. It's on ML1 currently

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US Marine & OIF Veteran
Semper Fidelis

Devices:
Phone:Sprint Note 3 (N900p KK 4.4.2)
Tablet: Samsung Galaxy Note 12.2 LTE (Verizon P905V)