When will the next update for minecraft xbox 360 come out?

When will the next update (after tu 12) for mine craft Xbox 360 come out? And what will be in it?

That much we have yet to ascertain…

XBOX ONE and PS4 get TU 14, but MineCraft for both of them will come next year.
PS3 and XBOX360 still have TU 13, but TU 14 haven't been confirm.
TU 14 will come in 2014, but yet still no date.

When did update 14 come out for mincraft xbox 360