Already done: http://www.marketwire.com/press-release/yammer-accelerates-m... in the section "Platform Growth":

Yammer released a number of key enhancements to its platform, enabling integration with a wide range of business applications:

[...] Yammer released a new version of its SharePoint integration, adding a highly secure, real-time social layer to the native SharePoint platform, making it social, mobile and engaging for enterprise employees.