I have applied, but have not yet received a decision. My application remains in "To Dept For Review" status. I am interested to see if anyone currently enrolled finds this thread.
Regarding your second question, from the school's FAQ:
The name "Online Master of Science" is an informal designation to help both Georgia Tech and prospective students distinguish the delivery method of the OMS program from our on-campus degree. The degree name in both cases is Master of Science in Computer Science.