Our download page always points to the latest version, but anyone can choose to download any older version, codeplex keeps history and we don't ever remove old versions from history.
In this case it is more likely that your host downloaded it to their own server back when that was the new release.
You should consider subscribing to the mojoportal blog, newsletter, and/or developer forums so you will know when new releases are made or important security updates are made available. This is only like the 3rd security fix ever in the history of the project since 2004, so it is not a frequent thing, but it is best to stay informed about new releases.
Best,
Joe