The release of version 1903 brings changes that affect everyday users, business leaders, and IT decision makers. This ebook highlights the most significant new features and explains what you should be aware of before and after installation.

From the ebook:

Development of Windows 10 is a continuous process. While previous versions of Windows received service packs or point releases that served primarily as rollups of Windows Update security patches, Windows 10 receives feature updates on an approximately six-month cadence. These updates bring major user-facing changes, as well as changes to enterprise features.

Windows 10 version 1903 (also called 19H1) was made available to the Release Preview ring of the Windows Insider Program on April 8, 2019, and was added to the MSDN download catalog on April 18, 2019. Microsoft announced general availability for consumers, and commenced rollouts via Windows Update, on May 21, 2019.

What to know before and after installing the Windows 10 May 2019 Update

• You should unplug and remove your external drives and memory cards.
  Users receiving notices that “This PC can’t be upgraded to Windows 10” when attempting to install the update should remove external drives and memory cards, as they can block systems from installing the update. The update process can cause drives—including internal drives—to be assigned different drive letters after installation.
• You’ll need more free space to install the May 2019 update.
  Microsoft has increased the amount of free space needed to install the May 2019 update to 32 GB, an increase from the 16 GB needed for 32-bit versions and 20 GB for the 64-bit versions, which ZDNet’s Liam Tung called “entirely unrealistic.” Microsoft is also introducing “reserved storage,” allocating 7GB of the disk to ensure that future updates can be installed smoothly.