The Cyclone is owned by the city, Astroland just had an agreement to operate the ride, I'm sure they will find an operator for the next season.
Also, the Wonder Wheel is not apart of Astroland. Deno's Wonder Wheel park is safe and is not owned by Thor, that park has not been sold as reveled in a few news releases and will be operating in 2009 from all knowledge.
Astroland consists of the log flume, tower area between the fences by the Wonder Wheel and across the street from the Cyclone. So the Miler coaster is safe as well as the Spook-A-Rama dark ride across from the Wonder Wheel. Sadly the cool little Big Apple coaster is apart of Astroland .. I love that turntable.