No. DCS 2.0/EDGE will be a free update. Unless you've bought the original A-10c beta though you will have to buy the Nevada map.

"...late afternoon the Air Tasking Order came in [and] we found the A-10 part and we said, "We are going where!? We are doing what!?"

Capt. Todd Sheehy, Hog pilot, on receiving orders during Operation Desert Storm