TheNextWeb is reporting that Google may be set to announce Google Wave servers for federation later today.
Currently Google has two Wave infrastructures available to those outside the company, the first is the developer preview sandbox which has been available since Google I/O earlier year and the second is the mass consumer preview which was opened up to 100,000 participants in September. Google is expected to allow companies and end users to build and host their own Wave servers. These servers will be able to talk to other Wave servers.
TheNextWeb claims that Google Wave co-founder Lars Rasmussen has confirmed Google plans on opening up the sandbox infrastructure for federation later today. More details are expected to follow shortly.