SAP EP5.0 Upgrade

Hello Everyone,

My company is currently in the process of evaluating our corporate portal at the EP 5.0 level and attempting to find out any drivers that warrant an upgrade to the new platform. I am wondering if/where there is information availiable (or if you could tell me) that outlines any pitfalls that a corporation may face by remaining on the old EP 5.0 platform. Specifically are there any supporting technologies (ITS?) that are being phased out and/or cost benefits of moving to the new portal.

Thanks for any input you can provide