Access is limited at first. If you’re an everyday user, you can only use Wolfram Alpha data as part of an Office Insider preview — Microsoft 365 users will have to wait. The corporate crowd can use Power BI data types in Excel for Windows for Microsoft 365 and Office 365 subscribers that also have Power BI Pro service plans.
How well this works will depend on how Microsoft interprets data. You might still have to tweak a dataset if Excel doesn’t know what to make of it. All the same, this could make Excel spreadsheets much more useful for putting data to work — you can easily use live, evolving info instead of painstakingly entering it by hand.