Camera features: Support for long exposures?

I haven't seen any in depth reviews of the new camera app so I thought I'd place the question here: How much manual control does the app allow? I'm interested in doing long exposures in the range of 15 to 30 seconds.

I plan to use a tripod or similar device and I've read in the manual that the app has a shutter release timer, but the manual doesn't say what the shutter speed range is... Can someone with the phone please report back here??

Thanks in advance,
F