Hello ill skillz 1881. You heard correctly. You are required to own The Taken King expansion on your account in order to buy and play the Rise of Iron expansion. Also keep in mind that the expansion is only available on the Playstation 4 and Xbox One consoles. Other than that, you need a minimum of 14 GB of hard drive space in order to download the expansion and any updates. All of that information can be found here: [b][url=https://www.destinythegame.com/rise-of-iron/wheretobuy]Rise of Iron Where to Buy page[/url][/b] I included the requirements here as well. I hope that helps you! [quote]A minimum of 14 GB available hard drive storage space required for PS4 and Xbox One as of September 2016. Storage space requirements are subject to change and may increase. If you purchase after September 2016, please visit www.destinythegame.com/size-requirements for current requirements prior to purchase. Additional storage may be required for setup, updates, and features. There may be mandatory in-game updates which users must download to continue playing and which may require additional storage. Broadband internet required. Users responsible for associated fees. Additional charges can apply for online content and some features. Various elements and functionality of PS4 Destiny game require PlayStation Plus subscription, sold separately. Various elements and functionality of Xbox One Destiny game require Xbox Live subscription, sold separately. Please see www.destinythegame.com for further details. Terms and conditions apply.[/quote]