LabCorp and UHC

I am a corporate LabCorp employee. I got this in the mail today:

This letter is to inform you that LabCorp's EPO Medical Plan through UnitedHealthcare will not be offered as an option for medical coverage under the LabCorp Personal Choice Benefits Program after December 31, 2007.

What's up with that? I thought LabCorp just signed a multi-million dollard 10 year deal with UHC? Now they are no longer a choice for benefits? Wow.