Unfortunately he seems to love to speak and announce many things but after that nothing happens for some reasons, especially when someone from the chat say one feature is missing during his live streams. But I wonder why they haven't already added it if they were interested in this matter. Even smaller casinos like Nitrobetting or Betnomi already have a poker room so it shouldn't be very hard for a big platform like Stake to create one.
It depends on what kind of poker Stake will have. If their goal is to create a poker cash game, then it really shouldn't be a hard task for them because they only need to add some tables on their site. However, if the Stake team wants to create a full-fledged poker room, they will need to create their own software for that anyway. In that case, that doesn't seem to be such an easy and quick task.