It was in the most recent live letter. The issue is which one they want to implement first. Patch 2.2 is going to bring either Player Rooming or Player Housing. Given that 2.2 is likely 6 months away, if SE selects for Player Rooming that implies that the actual Player Housing system would be in Patch 2.3 at the earliest... which is likely 9 months to a year away.

Quote from the live letter below:
1:48:22
Q: Will you be able to have individual rooms in your free company house?

A: We are planning to have this after patch 2.2, but we'd like to decide whether we implement individual rooms or individual housing based on server capacity after we implement housing. However, we are planning for both. We'd like you all to be able to build a cool personal space for yourselves.