At the K2 conference, we also got information on what K2 will do with SharePoint 2010. As you can see in this post, K2 is working hard to enhance the new functionality of the Office 2010 platform. Personally, i really like the integration with the office applications itself as lots of clients actually don’t want to leave outlook.
Apart from this new functionality, K2 will also support the current functionality in SP2010, which we saw a demo of at the conference. This makes K2 the only workflow engine i know that is able to work with SP2003, SP2007 and SP2010. To make it even more cool, you can combine those in one single workflow!