Intuit has begun rolling out Release 16 (R16) to the QuickBooks Desktop Product line. The changes, improvements and fixes elaborated below were included in this release for QuickBooks Pro 2016, QuickBooks Premier 2016, QuickBooks Accountant 2016 and QuickBooks Enterprise v16.0. Be aware that each new update also includes all the changes from earlier updates. If you have automatic updates turned on, QuickBooks will download the updates for you and prompt you to install it. You can manually download the update from the Official Intuit QuickBooks Downloads and Updates Webpage (product/version specific).
Release 16 Update - March 2020
This update contains no visible changes to your product.
In other words, everything within this update is behind the scenes and they are not telling us, at least not in the official 'release notes' what it is.
If I had a guess to venture, this late in the life-cycle of the product, I would suspect that this has something to do with the approaching 'sunset' of QuickBooks 2017 desktop products on May 31, 2020. There have been updates in the past in which Intuit used the same or similar language to prepare products for 'sunset' related limitations.
Should You Update?
Well, this is always a question, since we don't know what's included in the update, then who knows if you 'really need' what's in it. So, if you are not interested in these updates then you need to make certain that 'Auto-updates' have been turned-off inside QuickBooks.