According to the Programmer's Notes:
"WAI is supported in Enterprise Server 4.0, but is not guaranteed
to be supported in future releases."
That is effectively deprecation, though they don't use the word.
Also, the absence of an ORB in iWS 4.0 makes it more than
deprecated, in my mind. You may wish to continue running existing
applications, but it would be hard to recommend developing new
WAI applications.
The replacement would be servlets. This is also the preferred
migration path for existing WAI applications written in Java. For
those written in C++, you can either move to Java (a move I have
found reasonably easy), to NSAPI, or to an application server
that supports C++.
John L
cc: Alan Willemssen