Two new features in the works for netFORUM 2.2 are getting rolled out to both the 5.x and 6.x releases soon! The first is better support for the SSO cookies used in netFORUM Authentication, made possible by matching the AES Encryption used by netFORUM. For module developers this means that there are new methods in the core netFORUM xWeb Interface module to encrypt data which eWeb can decrypt and read.
Also upcoming is better introspection for some of the newer xWeb methods that just say 'parameters'. Many of these are defined by netFORUM as taking a custom data type called 'parameters'. That data type is defined in the WSDL though, so upcoming is support to inspect those functions and present a real list of parameters.
There is also a beta release of the netFORUM xWeb Interface module for Drupal 6, and the netFORUM Authentication module has some activity in CVS to support basic authentication and SSO although extra features like user login and editing are outstanding.