The new Xbox controller leak shows quite the difference in body design. Since we don't know the overall size, I compared it's size in 3 different ways to the current controller :
Xbox Elite Series 2 with Xbox Design Lab (Somehow) Got Even Better - Xbox Wire
Xbox Design Lab | Xbox
The New Xbox Wireless Controller – Remix Special Edition Is Made Partly from Reclaimed CDs, Water Jugs… and Other Controllers' Parts - Xbox Wire
NEW WIRED XBOX S-TYPE CONTROLLER FOR XBOX 1st Generation CONSOLE | eBay
Xbox Wireless Controller | Xbox
Microsoft Announces Two More Xbox Controller Variants
Xbox Wireless Controller | Xbox
:max_bytes(150000):strip_icc()/_hero_SQ_Xbox-Series-X-S-Controller-1-5e10937d2ab34a6391ad2f4a8ff3ab54.jpg "Xbox Series X|S Controller Review: Improving On An Old Favorite")
Xbox Series X|S Controller Review: Improving On An Old Favorite
Xbox Wireless Controller | Xbox
Xbox Wireless Controller + Wireless Adapter for Windows | Xbox
Xbox Wireless Controller | Xbox
Xbox Wireless Controller | Xbox
Evolution of Xbox controllers : r/xboxone
Buy Xbox Wireless Controller - Microsoft Store
Xbox Wireless Controller – Remix Special Edition | Xbox
Xbox Wireless Controller – Remix Special Edition | Xbox
Which generation of Xbox controller do I have? - Consoleskins
Xbox Wireless Controller | Xbox
What is the difference between the Xbox One, Series and Elite controllers? - GamingDeals.com
Xbox Wireless Controller | Xbox
The Evolution Of The Xbox Controller - GameSpot
Xbox Wireless Controller | Xbox
/cdn.vox-cdn.com/uploads/chorus_asset/file/23515575/acastro_220505_5198_0001.jpg "The best Xbox controllers: Microsoft, Scuf, PowerA, and more - The Verge")