The intro quest for the Revival Catalyst has been enabled on live servers this week.
The quest should automatically appear in your Quest Log when you log in to the game. Alternatively, you can pick it from Therazal that offers the Aiding the Accord weekly quest.
However, there are no charges available this week and you still cannot convert Season 1 gear for transmog.
The Revival Catalyst will be enabled on live servers next week on June 13, allowing players to convert Season 2 eligible gear to Tier Sets.