I know omnia has released over a year ago. But, I purchased this item through eBay and will be sending it back again as the shipped item wasnt up to the mark.
My few cents about this phone as follows:
A brilliant Windows Mobile phone which has everything a smartphone should have including 5MP camera, accelerometer, GPS, a good responsive touch screen, loads of inbuilt memory 8GB/16GB, and Intel/Marvel Monahans Processor although its max clock frequency is around 624 MHZ it actually runs around 324 MHZ or so (depending on suspend and resume).
The goodies have been already explained by our earlier experts. Let me summarise my take on shortcomings. the usb cable is Samsung protrietary which is the biggest disadvantage. unlike hTC phones, you have to have the original data cable if you flash/datasync with host-PC. Another cons is it is a QVGA resolution phone meaning its a 240x400 with 96 DPI(dots per inch) looks pale as compared to a htc Touch which has a 480x640 VGA display with 192 DPI. But the viewing area around 3 inch is perfect. Also the glossy exterior is more dust friendly, more smear friendly... hahahah. gets scratched or messy easily. Another thing is there is no placeholder for a stylus which may be required if you are still using Windows Mobile 6.1 OS. Also, microSD card slot is under battery which is not convenient. Also the camera lacks a powerful xenon flash.
Otherwise, its a super phone .. anyday it beats any type of iPhone...:-)