> Throughout Excel's 40-year history, you've only been able to put one value per cell. In this announcement, we're excited to share how that's changing with the release of lists, arrays in cells, and nested arrays, initially to Microsoft Excel for Windows and Mac Beta Channels.

This seems like something I'd expect to already exist in Excel, but the way it's being presented makes it sound like they want to murder Excel.

Would anyone be shocked to find out that I've been smuggling JSON in spreadsheets for a long long time and regret nothing?