BES Enterprise Express released yesterday!

Blackberry Enterprise Express has released.

There is a great comparison matrix for BES Enterprise Express and other BES products here

Unfortunately, for customers who adopted and recently bought or renewed their Blackberry Professional licensing, I have yet to find information about migrations, or the future of the "professional" product line. There is not a clear delineation that professional became Enterprise Express, but it does appear that way. I did find the old BES Pro PDF comparison on their UK site and was able to make this comparison below:

UPDATE! - 3/10/2010 - I received word that Enterprise Express CAL's are also free, making BEE a much cheaper option than BPS was.