Read all of the other threads on this very same subject and quit wondering about it.
The updates will occur when Samsung gets good and ready to release them and not a moment before. All the forum noises on this topic is not going to make them release it any faster.
even after Samsung has released an update for a particular model, the carriers have to have time to put their own spit and polish on it. Branding as it is called. bloatware is more like it.