The CW has ordered 24 all-new half-hour episodes of improv comedy series Whose Line Is It Anyway? to debut in 2015. No premiere date and time were announced for the new cycle, but featured performers Ryan Stiles, Wayne Brady and Colin Mochrie will return along with host Aisha Tyler. Dan Patterson, Mark Leveson, Jimmy Mulville, Stiles and Brady exec produce the series from Angst Productions and Hat Trick Productions.