The contents of 76210 Hulkbuster include LEGO models of the Hulkbuster, an informative plaque and a Tony Stark minifigure. On that plaque, it mentions the suit’s special feature of the accessories supplied by Veronica, the mobile platform that launches the suit in Avengers: Age of Ultron.
However, there’s no sign of Veronica or the additional elements in 76210 Hulkbuster, which instead focuses on the base suit.
Granted, the set name isn’t LEGO Marvel 76210 Hulkbuster and Veronica accessories. Though 76105 Hulkbuster: Ultron Edition was much less expensive at £119.99 / $119.99 / €129.99 compared to £474.99 / $549.99 / €549.99 and it included a small Veronica build and an extra hand to attach to the main build.
Unfortunately, Veronica only appears as a reference on the plaque in 76210 Hulkbuster. Whether Veronica was essential to 76210 Hulkbuster is up for debate, as the build is, mostly, accurate to Avengers: Age of Ultron otherwise.