If you are an existing Visual Studio customer with a current MSDN subscription, you will transition to the following new editions (on March 22nd):
a) Visual Studio Professional with MSDN Pro ==> Visual Studio 2010 Professional with MSDN
b) Visual Studio Professional with MSDN Premium ==> Visual Studio 2010 Premium with MSDN
c) Visual Studio Team Edition ==> Visual Studio 2010 Ultimate with MSDN
d) Visual Studio Team Suite ==> Visual Studio 2010 Ultimate with MSDN
1) Visual Studio Test Elements 2010 with MSDN and Visual Studio Team Lab Management 2010 are brand new products - there is no transition path per se.
2) Team Foundation Server is now part of MSDN (!!!) - its no longer a standalone product
Given this, there are a couple of scenarios you should think carefully about BEFORE March 22nd:
1) do I need more licenses for my team?
For example, every Team Edition (Arch, Dev, DBA, Test) you have today will automatically turn into Visual Studio 2010 Ultimate in March!
2) do I need to 'step up' some of my current licenses to a higher edition?
If you have Visual Studio Professional today and decide to step-up to a Team Edition - you will get Visual Studio 2010 Ultimate in March!
Both scenarios represent cost savings of about 50%. If you require more information about this please feel free to contact my colleagues (Arabind: firstname.lastname@example.org or Jihad: email@example.com)