I get asked a lot whether customers should consider upgrading to WCI 10gR3 if they are already on ALUI 6.5 MP1. It is a very logical question being that we have stated many times that WCI 10gR3 can be considered as a MP2 of ALUI 6.5. Hopefully I can help you understand what the differences are between the two versions to help you make a more informed upgrade decision.
Here is a set of bullet points for what was done in the 10gR3 release beyond 6.5 MP1:
• Oracle Branding
• Removal of all BEA License Keys
• Addition of WLS 10gR3 and JDK 1.6 support
• Bug Fixes
• New Experience Rule based on HTTP Headers
• New iPhone based Adaptive Layout templates
For customers that are already on 6.5 MP1, there isn't a lot of reason based on the list above to move to 10gR3 by itself. However if you would like to get access to some of the other products within WebCenter Suite, then upgrading to the latest version and migrating to WebCenter Suite licensing does make sense. It all depends on what you have planned for your portal implementation.
