Microsoft Business Solutions Corporate Vice President Michael Park made a passing reference to the coming Project and Visio Office 365 add-ons during an interview I had with him at the partner ...

Visio Pro for Office 365 is sold on a subscription basis. It costs $15.50 per month or $13 per month with an annual commitment, which works out to $156 for the year.

News Office 365 Improvements Include Fluid Framework Preview Expansion, Visio Co-Authoring and SharePoint Perks By Kurt Mackie 02/12/2020 ...

Microsoft's March 2017 Office 365 update brings Excel, OneNote, and Visio improvements, including better inking and integration.

While Microsoft confirmed that all Office 365 apps were coming to the Windows Store back at Build, there's been no mention of business apps since then; however, they're still coming.