We are currently using RTC 4.0.5 (although on a smaller scale project with just a handful of users at the moment) - and are in the process of learning the tool from an admin standpoint and demonstrating to members of the team (who currently are using ClearCase and hope to migrate to RTC).

Now that release 6.0 is out, we may make the jump in the near future (naturally, migrating from 4.x to 5.x and then up to 6.x).  For some other tools such as RQM and DOORS next gen, my understanding is some big changes are in store - in some cases affecting how the tools are used. 

I am curious if the same is true for RTC (again keeping in mind we are familiar with 4.0.5 and not 5.x or 6.x) - I Believe thi sis not the case and RTC general usage (For developers primarily) remains unchanged, although many new features added on top. 

Can you confirm if this is correct, otherwise what major changes have been implemented?
thanks

Paul