Presenting the way to have the Latest Photo Editor (S5) on 4.4.2
here are the steps:
First through any root file browser go to /data/app
Rename the com.sec.android.mimage.photoretouching.apk to com.sec.android.mimage.photoretouching.apk.bak
(This was your existing common photo editor)
Now flash this
Now from gallery if you open an image and want to edit, you will find the new photo editor with lots of options.
This is tasted on DN3 RC2(NOT FOR DN3V5) but should work on other 4.4.2 roms also.
Again WHOLE CREDIT GOES TO THE GREAT E-team for giving us the S5 mod and apps.
Special thanks to @Logel
Here is the update mates, for ported android 4.4.4 users
First rename the 'photoretouching apk' as '.....apk.bak' in /data/app and rename the Gallery apk as same in /system/priv-app.
Now flash the zip, check, if everything is okay you can delete those renamed apks.