Hide tab bar tab or disable it?

About to release an iPhone app that has five tab bar buttons.

One of the buttons will be used for functionality that is in a future e.g. 1.1. release. As a result of this, is it better for me to disable the tab bar tab in IB or should I remove it all together from the tab bar?

Is it likely that the app would get rejected by Apple if I leave the tab bar button i开发者_StackOverflow中文版n but disabled?

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If you want to keep the component, just hide it instead of disabling it.