Thanks a lot friends..
In the meantime you can manually set the tabs and they will follow the language settings. To manually retrieve a localization key use the code below:
MicroFour.StrataFrame.UI.Localization.RetrieveTextValue(
It will return the localized string related to the value. So you can just set the text or caption property of the each tab page for now. This way you can at least move forward in development.