Right now, the site has neither binaries nor source, but I'm pretty sure both will be available at the same time. The only point of the binaries there is that since they are served by Cisco, then Cisco can handle the patent licensing. The license is non-transferable (this is not something Cisco controls), so you can't download once and put it into your product, each product has to downloading it on its own for the license to apply. Since it's open source, anyone can also just build it themselves, then then obviously they're also not covered by the license.