There's more on the way. I think there's a total of 17 cameras on the MSL. (Many are stereo cameras.) They have to get them up and running.
The first images came from the lo-res hazard cams, which are there primarily to look for things that might interfere with MSL's ability to move across the terrain. They were already in place and operational when MSL landed.
The MSL is so complicated, the first two weeks or so will mostly consist of testing the equipment. As more of it comes online, they will begin to incorporate some tasks. It will be some two months before they know everything is up to code, so to speak.
But one of the nifty things about this mission is that with such a technical landing procedure, they were able to land right in the area they want to investigate. They won't have to wait to check out the drive train and go somewhere before they start collecting data.
CRUD = Contamination Resulting in Undesirable Deposits.
CRAPP = Contamination Resulting in Additional Partial Pressure.
"The Curiosity rover likely will spend the rest of the year monitoring the martian weather, collecting radiation data and analyzing rock and soil samples near its landing site in Gale Crater before it heads for its ultimate target, the rugged foothills of Mount Sharp just four-and-a-half miles, but many months, away, the project scientist said Friday."
Read about Curiosity's tentative experimentation and travel plans for the coming weeks: