According to "A New Dawn", they are throwing out the no attachments rule:
http://42lifeinbetween.wordpress.com/2014/09/03/star-wars-a-new-dawn-review/
It will be fascinating to see how the characters evolve as Rebels progresses. Especially in light of what is revealed in the book, that the Jedi ban on romantic relationships is not part of the Jedi Code but an addition to their rules for life later.