The Biggest Improvements Announced at FabCon, and the Ever-Widening Gap Between Adoption and Capabilities

What’s the value of a long-awaited feature?

Well, that depends. Have you ever tried explaining a fiscal calendar that doesn’t believe in months?

This week, Rob Collie and Justin Mannhardt dive into the latest Microsoft Fabric updates, including the long-rumored, almost-mythical custom calendar support in DAX, the highly requested user-defined functions, and the Copilot expansion that might finally be worth the hype. These updates aren’t just bells and whistles; they’re fixes to problems that have been quietly driving your team up the wall for a decade.

And while the tech is cool, the real story is what it unlocks for the people trying to build reliable reporting, reuse their logic across models, and stop wrestling with edge cases in Excel at 10 p.m.

If you’ve ever been told, “that’s just how it works,” this episode is a breath of fresh air, and a reminder that progress doesn’t always come with a parade. Sometimes it shows up in patch notes.