The last touch to the indexer code related to communities was 6 months ago and the recent git history tells that the community features are not the focus at the moment.
Considering recent posts of @steemitblog, looks like they're focusing on moving away tag and follow api endpoints from steemd to hivemind. (Probably targeting a cost reduction on official RPC nodes.)
However, I have to add, this is just an educated guess from my side. The roadmap and plans may be different in Steemit inc.