In the past, the DSLRs sensors were quite sensitive to long exposures. As I remember it, during long exposures the sensor could get so hot that it could actuall

In the past, the DSLRs sensors were quite sensitive to long exposures. As I remember it, during long exposures the sensor could get so hot that it could actually burn the color filter - so the color accuracy decreased over time. This was why you could not use live-view on a DSLR camera when all the P&S cameras could do it. The new sensors use less current, so they don't get that hot during a long (live view, movie mode) exposure. The DSLRs still have a few advantages over low-end mirrorless cameras: faster reaction time, faster focusing time (usually because they use phase-detection and not contrast-detection focus sensors), better ergonomics. But they are bulky and have more things that can break (the mirror box is quite complex). We will probably continue to see DSLRs in the professional usage, but a mirrorless camera looks better for the consumer market.