Yes, the IDS-4235 is supported and can run IPS version 5.0.
However, the IDS-4235 can not use the new InLine feature in version 5.0 without the addition of a 4FE card (IDS-4FE-INT=).
The link below provides a breakdown of what sensors and optional interface cards can be used for the new InLine feature in version 5.0:
http://www.cisco.com/univercd/cc/td/doc/product/iaabu/csids/csids11/cliguide/cliinter.htm#wp1040331
The following is the link to the base directory of all the version 5.0 documentation:
http://www.cisco.com/univercd/cc/td/doc/product/iaabu/csids/csids11/index.htm