Nope. They just have last minute cancellation they are trying to fill. Very few people would actually agree to do it on such short notice if they had a choice. Waiting a few weeks is FAR better, in terms of getting psyched and properly prepared, than just wining it at the last minute.
JMHO, but I'd always pick waiting a month over doing an II the next day. Unless, of course, waiting meant pushing an II into April or beyond. I really do not think interviewing for the WL is a thing at MD schools until the bitter end of the cycle, if then. Certainly not in February or March.