More accurate to call it the 600D?
Someone mentioned in another post the new camera should be called the 600D; and I feel this has merit.
Both the 550D and the 60D offer:
an 18 Megapixel APS-C CMOS sensor
a DIGIC 4 processor with ISO 100-6400 (expansion to 12800)
full HD movie recording with manual control and selectable frame rates
a 9-point AF system with one extra-sensitive cross–type point at the centre for f/2.8 or faster lenses
the iFCL metering system first launched in the EOS 7D
SD card storage
exposure compensation up to plus or minus five stops
a polycarbonate body over a steel shell.
the 60D also offers 5.3 fps vs 550D's 3.7fps, a larger, arguably more ergonomic body, and a quick control dial.