Personally, I find this great news. I loved that show, and Drew Carey's Improve-a-ganza just doesn't cut it for me.
Source: This lone (real) image of a Colin Mochrie tweet (not mine)
EDIT: More info
Source: This lone (real) image of a Colin Mochrie tweet (not mine)
EDIT: More info
Returning are Ryan Stiles, Wayne Brady and Colin Mochrie, who starred on the ABC series. The trio, along with a special guest each episode , will go through a series of spontaneous improv games.