I just randomly went to Software Update on my Galaxy S4 I9500 which I HAD flashed with SER Russia ROM and changed CSC to SER. When I clicked update it began to download an update that is just over 100mb, not seeing it on SamMobile but it is available via OTA, will upload screenshots just now, it upgraded Knox to 2.0 BTW, it gave me the warning that Knox will be updated.
Model name: GALAXY S4
Version: Android 4.4.2
Build date: Fri, 11 Jul 2014 10:03:56 +0000
Product Code: SER
Only new things I see is the updated Knox and Kids Mode