It was open some evenings when we were there July 22-27. I had a beef and rice bowl that was very good. But at lunch it was a different CS spot wiht burgers and such!! Very confusing.
It comes and goes like the wind. You have to personally check it out to know.
During the addition of the buffet for free dining capacity in that area -- I'd guess it will be open even less.
Seasonally is Disney speak for "when they feel like it". That goes for attractions (Sounds Dangerous) as well as restaurants. I have only seen the Noodle Station open during Christmas week in many, many trips over the past 5-6 years.
As stated above, it is open as a TS buffet during free dining.