Social networking startup and X competitor Bluesky is working on subscriptions. The company first announced plans to develop a new revenue stream based on the subscription model when detailing its $15 million Series A back in October. Now, mockups teasing the upcoming Bluesky subscription, along with a list of possible features, have been published to Bluesky’s GitHub. Though the company warns on GitHub that the list here is a user interface mockup only and the paid features could very well chan...