Destiny's forthcoming expansion The Taken King is coming to Xbox and Playstation console platforms on September 15. The PC version, without any confirmation, is not ruled out by Bungie. Recently there's new clue on Bungie's job post which hints the PC version could exist.
Bungie is looking for a PC compatibility tester, according to the job list on Bungie website. "The PC Compatibility Tester will evaluate PC hardware-specific features and ensure various systems work together across multiple PC configurations to provide a great experience. This is a challenging area to test, so we are only looking for the most resilient and technically minded testers. If you love solving new problems on a continuous basis with an eye for detail, you will love PC Compatibility Test at Bungie," reads the job description.
As for now, Bungie is focusing on The Taken King Expansion and perhaps the follow-up content for the console. Guess the PC version is something for next year even it exists. Anyway, Destiny has a new trailer at Gamescom 2015. Don't miss it.