Expression Blend Service Pack 1 (SP1) is alive and available for download from
cut and paste from the support site:)
Expression Blend Service Pack 1 (SP1) is an update to Expression Blend. If you are currently using the trial version of Expression Blend, simply download and install this service pack and continue to use the trial. If you have purchased Expression Blend, download and install this service pack to update your copy of Expression Blend.
You can get specific information about the SP1 update in the Microsoft Knowledge Base article (944811), Description of Expression Blend Service Pack 1, or the Microsoft Knowledge Base article (944809), Issues that are fixed in Expression Blend by Expression Blend Service Pack 1.
An updated User Guide is also available for Expression Blend SP1. To install the updated User Guide, see Expression Blend Service Pack 1 User Guide and follow the instructions.
Cheers Dave