The project I started has now been there for 3 years and was writen using seam 2.2.2

It still works like a charm but we're thinking of upgrading the platform. It looks like Seam will not be maintained in the future. What would be the best choice to upgrade the system?

-Upgrade to seam 2.3?

-Try and use a different framework?

-Use basic JDK 6 or 7 functionality?

The main problem is that the richfaces libraries seem to be outdated and eg. The newest versions of Internet Explorer do not support the javascript that is used.