one to many ?
it is possible to send XEM from an Nem: xem: add to many Nem: xem: add ?
you mean to send to different accounts with a single transaction? No, not in the current version.
yes of course, would it be possible in the next upgrade ?
no, will be possible in catapult (that is the next generation of nem software) but that is not out anytime soon.
I understand that it will be released in 2017, do you have more info on this ?
There is some general information in the catapult whitepaper:
https://www.nem.io/catapultwhitepaper.pdf