We have good news for you. We are going to work more on Yii 2.1. Yii 2.0.14 release, that should happen in first months of 2018, will be last release that adds features and enhancements to 2.0 branch.

After 2.0.14 release:

1. We are not accepting any features or enhancements in 2.0 branch.
2. We are merging 2.0 into 2.1 once and not merging it again.
3. Bug-fixes are accepted.