Very positive overall. Here are a couple of quotes:

"Sun OpenSSO Enterprise brings innovations such as Fedlets and multi-protocol support that will simplify the on-boarding of new federation partners and reduce the costs of doing so. The new tools provide a means to quickly and economically drive SSO across our global organization."

"We are seeing a growing interest in OpenSSO and open source in general. People are looking for different options on software licensing and support. They are not always happy with the price tag on commercial software licenses."