Besides the big investments in Titan (e.g. multi-tenancy) there are dozens of features that will enable scenarios that weren’t possible in CRM 3.0.
This occasion I want to highlight a little, yet important feature, that responds to asks of customers that don’t want to use the OOB names for areas in entity forms. Using ISV.config you will now be to rename those areas; this post contains a step by step screencast with the details.
The end result looks like the following: