Dish Network and DirecTV customers may get a free preview of HBO and Cinemax from 9/23-9/26!
A good idea during these previews is to record as much programming as you can (if you have DVR) so you can watch these premium channels for weeks after the free preview!
DirecTV subscribers can access HBO and Cinemax on Channels 501-511 and 515-523. Dish Network subscribers can access HBO and Cinemax on Channels 300-309 and 310-314.
Note - last time there was a free preview, it did not work for us (we have DirecTV).