@alangsam: I received a letter from AT&T regarding the 4.4 firmware. It said to download the latest firmware from:
http://support.option.com/quicksilver/
Currently that's v4.4, 8/17/2009 (firmware timestamp: 2009-07-27 17:00), software version 99.39.0
At the site above, there's a link to a PC EXE file called Superfire_4.4.0-commercial.exe which has the firmware in it. Unfortunately the site also says there's no Mac OS X updater--yet.
If you have VMware Fusion or a physical Windows-based PC and install the AT&T Communication Manager with the card, the firmware version is in Tools > Diagnostics > GSM info... > Device tab.
Or, in Superfire_4.4.0, (requires AT&T Comm Mgr), the "Ready to Start" screen has the firmware version with the timestamp and the software version.
Unforunately the OS X System Profiler does not give a lot info about the card:
GlobeTrotter Icon322:
Product ID: 0xd033
Vendor ID: 0x0af0 (Option NV)
Version: 1.00
Serial Number: Serial Number
Speed: Up to 480 Mb/sec
Manufacturer: Option Wireless Technology
Location ID: 0x24100000
Current Available (mA): 500
Current Required (mA): 500