this is kinda the side effect of the peaks and valleys/lulls in development cycles.
The team that completed the mining/smithing rework had a lot of help. with such a huge project, it's to be expected that other dev got slowed. It's only been 3 months since the release of it, and remember, dev can take months before anything comes out.
You also had a team wrap up ED3 and the subsequent quest. another bigger project.
So it may be may or june before we see another interesting sized project.