A Possible Return For John?

As you may have seen last Saturday night in the last episode of Doctor Who it was also John's last appearance in the series for the time being. Although at the end it did seem that Johns character (The Master) was still alive at the end of the episode. So could this mean a possible recall for John to return to the role? or maybe if The Master does return it will sadly be a newly regenerated master (basically no John). I personally hope that this means a recall for John but i suppose were going to have to wait and find out.