Samsung is now pushing Android 5 Lollipop update in India for the Galaxy Note 3 SM-900 version. This is the official update and a leak or a beta version. It is interesting to see Samsung pushing this update ahead of Note 4.
Installation instructions:
Download and extract (unzip) the firmware file
Download Odin v3.09
Extract Odin ZIP file
Open Odin v.3.09
Reboot Phone in Download Mode (press and hold Home + Power + Volume Down buttons) [i pressed volume up to start the firmware download process, volume down was for restart, did i press the right option ?]
Connect phone and wait until you get a blue sign in Odin
Add the firmware file to AP / PDA
Make sure re-partition is NOT ticked
Click the start button, sit back and wait few minutes