According to MikroTik News Wiki it is the longest break ever without news (since May).
Is there any suggestions whether new devices comming out soon?
Maybe Mikrotik are waiting until devices are actually shipping to distributors before announcing anything this time!
Though, you should look at http://forum.mikrotik.com/t/new-cpu-new-product-rb750gr3-rb750g-family-now-mmips/102198/1