This one's 3.0705.1.0.31, and apparently out for EMEA as well as APAC. Word on Symbian-Freak forums is that it's MUCH faster and more stable, anyone wanna try it or find a changelog?? If it's faster, I'm tempted to put the finishing touch on my newly-housed N73.
http://www.symbian-freak.com/news/007/02/n73_new_firmware.htm
http://www.symbian-freak.com/news/007/02/n73_new_firmware.htm