I can only speak for my retailer's practices, but as of the last couple weeks we've been moving away from the different brands of basic DTV receivers toward a single DirecTV-branded unit.
Advanced receivers like the Executive Director (HAH-SA) are still available, and TiVo/HD receivers are still available in branded forms, but the "dumb terminals", if you will, are being consolidated. I was disappointed I couldn't get the RCA DRD486 advanced model due to stocking issues resulting from this decision (I loathe IR remotes).