There was no rom updates since 7.18 for S4.
Wysłane z MI4 W
Yes there is and latest versions are 200mb smaller.
http://pan.baidu.com/share/home?uk=2114372862
And since a few weeks there is an kitkat build available based on CyanogenMod
http://pan.baidu.com/share/home?uk=2215007257
Grtz.