This is because these new kit kat emoji found in recent firmware from Samsung and not from Google. So now Samsung created their own emoji and will put them in their kit kat firmwares for the next devices and updates.
If you want to have the original emojis from Google or IOS and not the ones from Samsung, there's a way to do it if you have root.
- First of all, do a Nandroid backup (it is always useful to have a recent one)
- Now copy the font in the respective attachment to /system/fonts/ and replace the one inside. (root explorer is recommended for this)
- Change the permissions of the font file to rw-r--r--
- Reboot the device
If at anytime you want the to change back, just make the above process again, now with the file from the other rar files attached here.
Working on many other devices and roms, including S4 Google Edition, HTC M8, Note 3, LG G2, Galaxy S 5, AOSP SlimBean 4.4.2, AT&T Goldeneye v26, Omega..
Developer Steven Schoen created an app that does this whole mod for you, with a simple click.
Emoji Switcher (root)
Just uploaded the new Lollipop Emoji from the new version of Android 5.0
If you like this mod, please say thanks or you can offer me a beer here