No you do not need a special agreement. I would keep checking under your grant number during the day as sometimes it takes a few hours for it to show up. I would give McAfee a call if you don't see it by the end of today.
It appears that McAfee has added licensing to EPO 4.5. Their is a pdf called "FAQ for license management in ePO 4.5'. They talk about downloading a license key from the place you download the ePO 4.5. Has anyone seen this license key? Failure to use the license key will make your ePO server quit updating etc after 90 days.
Below is the first 3 sections in the pdf.
License Management in ePolicy Orchestrator 4.5
Frequently Asked Questions (FAQ)
Q: What is License Management in ePolicy Orchestrator 4.5? A: McAfee introduced license key and license usage tracking to help customers stay in compliance with McAfee licensing terms.
Q: Where can I get the license key for ePolicy Orchestrator 4.5? A: License key is available on the download website, where you can also download the product. Proper grant number is required to access the download site.
Q: Can I run ePolicy Orchestrator 4.5 without the license key? A: Yes, without the license key, ePO will function as an Evaluation version for 90 days.