LEGO Marvel Hulkbuster D2C set rumoured for 2022 release
Amazon.com: LEGO 76125 Super Heroes Marvel Avengers Iron Man Hall of Armor, Modular Lab with 6 Marvel Universe Minifigures, Playset : LEGO: Toys & Games
BrickLink - Part 76105stk01 : LEGO Sticker Sheet for Set 76105 - (38385/6224451) [Sticker Sheet] - BrickLink Reference Catalog
BrickLink - Set 76105-1 : LEGO The Hulkbuster: Ultron Edition [Super Heroes:Avengers Age of Ultron] - BrickLink Reference Catalog
Found a instruction for a Modified 76105 UCS Hulkbuster on Bricklink with bendable legs. I built it in the LDD first to reduce most of the Gray pieces which the original MOD
Review: 76105 The Hulkbuster: Ultron Edition | Brickset: LEGO set guide and database