Well, the FCC has just posted some more documents for what seems to be the new T-Mobile Sidekick 2009. With these documents we have some pictures and diagrams which layout the assembly of the new phone as well as some hardware info.

Here are thee specs so far:
OS: Danger OS
CPU: QUALCOMM MSM7200A (MSM7201A)
Memory: 128MB SDRAM / 256MB NAND Flash
Input: QWERTY keyboard
RF: UMTS/HSDPA, GSM/GPRS/EDGE
Camera: 2M AF or 3M AF or 3M
I/F: µSD card slot x 1, microphone, speaker, Stereo headset port, USB port, A-GPS, Bluetooth
RF: UMTS/HSDPA Band I, Band IV, Band V GSM/GPRS/EDGE 850, 900, 1800, 1900

If you want to see the rest of the pictures and digrams you can find them here ->