It has been discussed several times. This question is just to get the latest answer from the experts.
Is it still impossible to get a keyboard layout indicator in the top panel in gnome shell?
My personal experience says, it is impossible. I can use keyboard layout indicator in gnome classic, ubuntu, xfce, lxde! But not in gnome shell.
Also, will it still be impossible to use it even after release of ubuntu 13.04?
For whatever it is worth, I think it is quite strange and sad that what can be done in practically every other DE can not be done in gnome.