Due to not wanting to lose my job I can’t reveal how I know of this information but here it is
In 2016 we’re going to get atleast two new TCW arcs as a story reel and as a comic to coincide with Ahsoka’s reappearance in Rebels and her upcoming fight with Vader *First is the Ahsoka Underworld Arc (Has not been officialy named yet) and it has production nr. 605-608 and will be released as a story reel on starwars.com
*Then we’re going to get a 5 issue miniseries made by Marvel Comics named Star Wars : The Invasion of Mandalore. The fourth episode was split into 2 issues since it was very action and story packed.
As always, treat such rumours with caution.