Samsung will be releasing Android 4.4.2 to forgotten Galaxy note 10.1 2012 users but if you cannot wait till then you can flash them today. First download all of these files to upgrade from Jelly bean to kitkat.
BL :
BL_N8000XXUDND5.tar
http://www13.zippyshare.com/v/45313724/file.html
MODEM :
MODEM_N8000XXUDND2.tar
http://www64.zippyshare.com/v/59505193/file.html
CSC :
CSC_OXA_N8000OXADND5.tar :
CSC_OXA_N8000OXADND5.zip
http://www67.zippyshare.com/v/82582924/file.html
CSC_OXA_N8000OXADND5.z01
http://www48.zippyshare.com/v/56875063/file.html
CSC_OXA_N8000OXADND5.z02
http://www39.zippyshare.com/v/97261232/file.html
AP:
AP_N8000XXUDND5.tar :
AP_N8000XXUDND5.zip
http://www57.zippyshare.com/v/73873394/file.html
AP_N8000XXUDND5.z01
http://www3.zippyshare.com/v/46722430/file.html
AP_N8000XXUDND5.z02
http://www30.zippyshare.com/v/47884001/file.html
AP_N8000XXUDND5.z03
http://www32.zippyshare.com/v/39571794/file.html
AP_N8000XXUDND5.z04
http://www65.zippyshare.com/v/21536434/file.html
AP_N8000XXUDND5.z05
http://www69.zippyshare.com/v/78725952/file.html
AP_N8000XXUDND5.z06
http://www35.zippyshare.com/v/63192076/file.html
After that, put your tablet in download mode and use ODIN to flash them like shown in this screenshot.
That is it. You have successfully installed it on your Note 10.1 2014.