Amouse version 2.6 has been released (6/5/2004), which has USB support, and improved Logitech support. This is a scroll mouse device driver that works better on some wheel mice than IBM's driver. There is also a widget for XCenter available now. From os2.jp.
http://www.nbsoftware.de/sw_ms_en.htm
Source: OS/2 News and Rumors