The version only changes when the db schema is changed or when a stored procedure is added or altered. There were code changes and settings added since the preview and there were a few patches applied to the release after initial release. If you deploy the current files over your current installation and visit the /Setup/Default.aspx page it should add the new settings even though no schema changes are made it will update the settings according to changes in the config files for the features.
Alternatively, you could upgrade to the latest build I put up yesterday on our Novell Forge download page, mojoportal-mssql-build-2009-10-31.zip. Its not a final release but should be very stable and has all the new improvements to the Newsletter feature. This site is running the same build (but for MySql) and demo.mojoportal.com is also running this build. You will be able to upgrade from this build to the next official release which should ship sometime in the next 2 weeks.
If you've been upgrading for a while, you should also check the layout.master file of your skin and make sure it has this in the <head></head> section
<portal:ScriptLoader id="ScriptLoader1" runat="server" />
Hope it helps,