I just got an S3 last week (already updated when I got it) Plugging it to kies today gave me another update and changed my bootloader information. Looking at the Bootloader
Product Name: SCH-I535
Current Binary: Samsung Official
System Status: Official
QUALCOMM SECUREBOOT: ENABLE
BOOTLOADER RP SWREV: 2
Build number KOT49H.i535vrudne1
Anything changed with the update and knox?