It appears that Ektron didn't stop and rest on its laurels, though, as it has made a number of key enhancements intended to keep it squarely in the front of the pack.
In particular, the importance of SEO (search engine optimization) features can't be understated, and any CMS or blogging tool that doesn't include a strong feature set for efficiently adding metadata and creating readable URLs will find itself quickly left behind. CMS400.NET v 7.6 makes a lot of improvements in that area, both by automating clean URL structure and naming, to adding tools that can help check a site to ensure that it's search-engine friendly.
In terms of improvements for handing multiple sites, CMS400.NET v 7.6 add two keys features -- a central dashboard for managing multiple sites simultaneously, and e-Sync functions, which promise to allow changes made to one site to be replicated to other sites as needed.
Check out Ektron's site for more detail on CMS400.NET v 7.6. Ektron has made their name and built a sizable customer base by offering a lot of value for a fairly reasonable price, and it looks as if its newest version carries on the tradition.