Equinox has committed the month of July to making some big improvements in Evergreen's acquisitions module. Good news!  They are working on 

• EDI Invoicing
• EDI enhanced/enriched ordering
• Support for multiple PO handling
• Better end-of-year handling of unencumbered funds
• Ability to block purchase orders for items with zero copies
• Better page navigation/handling for selection lists, POs, and invoices

Their focus is on the following vendors: Baker & Taylor, ULS, Ingram, Brodart, Midwest Tape, Library Bound, S&B Books, and Recorded Books.

This blog post provides more info on what they've got in the works!