Eh I wish - Im not sure which media can be considered as reputable sources in Serbia, but you can find more info here. Just use a translator or something.

Tl;dr - they’ll basically switch to a dynamic plan which indicates when circa the bus will arrive, but this is just a ploy to hide that busses are not arriving on time or at all.

I wouldn’t praise this move at all, it is not doing anything good for those living in Belgrade.