Not at this time in the mainstream market.

Analog cameras currently used in typical surveillance applications adhere to either the NTSC or PAL standard which are not high-resolution standards.

For this reason all megapixel cameras currently used for surveillance purposes are IP (Network) cameras which free manufacturers from the bonds of the NTSC and PAL standards enabling a wide variety of megapixel technology as well as different aspect ratios (panoramic video).

There has been talk of a new analog megapixel standard, but it will require new capture cards and cameras as well as DVR manufacturers to develop products to support it. At this point it appears that IP will be the predominant technology long before analog megapixel would have a chance to take hold.

While it may be beneficial in applications such as casinos where analog has a large installed infrastructure and closet space for IP switches is at a premium, any early adopters of analog IP may be taking a risk that the technology will not gain widespread market acceptance.

For the record:
NTSC (National Television System Committee) was the standard used for television in the US until recently.
PAL (Phase Alternating Line) is the European equivalent.