Glad to read that.
The whole time 
there is an engine update in C13 as well (hybrid CPU support, thread scheduling, various updates, refactoring and optimisation).
As Matthias posted a while back, gapless engine unfortunately requires a lot of work and preparation under the hood that needs to be done before actually implementing. It is an ongoing topic, but the amount of time and effort it requires couldn´t fit into the C13 scope. But we´re aware it´s an important topic for many users.
[Edit: for context, this is Matthias´ post Proper audio engine: Gapless Audio! - #183 by Matthias_Quellmann]