That information came from a news website, not from D3 directly. While I'm sure that information didn't come out of nowhere (it was right about Cap and seems right about BW,) there's no guaranteeing it's 100% accurate.
The pulled article was marked as a sponsored article, so someone (Disney or D3) paid for it to be written. So the information it contained was most likely authoritative but premature.
Comments
https://forums.d3go.com/discussion/72313/infinity-war-new-supports-vaults-and-stores-4-25-18/p1