Announcing API endpoints for Twitch emotes

Using the GET https://api.twitch.tv/helix/chat/emotes endpoint, bitstier type emotes seem to not return a tier, only a blank string. Is this intentional or is this supposed to return the amount of bits required to unlock said bit emote?

Example from the response of the following request GET https://api.twitch.tv/helix/chat/emotes?broadcaster_id=133811240