Twitch announces a new “Dual Format” feature that lets creators stream in both horizontal (landscape) and vertical (portrait) formats simultaneously. The company says the feature will be rolled out starting next month, allowing streamers to broadcast content in two aspect ratios at once rather than choosing a single format. The announcement is made alongside other Twitch updates presented at TwitchCon Europe. Across sources, the core change is the ability for creators to maintain one stream while delivering it in both formats, with implications for how viewers watch on different devices and interfaces. The reporting does not detail specific technical requirements, supported channels, or how Twitch will display the dual outputs within its player and category listings. Overall, both outlets frame Dual Format as a new streaming capability aimed at improving flexibility for creators and matching viewing preferences for horizontal and vertical audiences.