This is the version to use for Microsoft Office SharePoint Server (MOSS) 2007 or Windows SharePoint Services 3.0.
Response to the Beta was great - however no code changes were necessary, so there is no need to upgrade if you installed the "Beta"; this released version is identical.
Thanks!
UPDATE: Someone requested more tabs - for source code users this is easy (change the constant in ZoneTabsConstants.cs). For convenience, there is a build w/12 tabs below called EasyTabParts12Tabs.wsp. Please install one OR the other of the wsp files (the regular version has 6 tabs max). The web parts are otherwise identical; you should be able to redpoly from the other package for an in-place upgrade of existing ZoneTabs web parts.