can not change keyboard input language I can not change language on my new android 4.1 tablet. On my phone I am able to change input language by long clicking on space bar button, however on tablet space bar does not have such functionality despite several languages are selected in android keyboard settings.

Tablet just picks first selected input language and thus if I want to change input language I need to uncheck all other languages that are before which I want to set. That seems to be some kind of a bug or I am missing something.
Oh, I found how languages may be switched :). There is a small keyboard icon in the notification area which allows to do that.