Too late to send updates?

I just won a fairly major award at the state/region level (If I said what it was, it would be very easy to find out who I am). Should I let schools know about it now or should I just wait and send it to schools where I get waitlisted?

It may be late but since the cost is that of an email or postage, you should send immediately just in case.

A lot of decisions have been made already, but I don’t think it would hurt.