Version 4.1 of the Network File System protocol is now supported on Azure Files. It will be provided to customers in the form of a fully managed NFS file system as a service, in preview for now.
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Canonical has said that it will conduct a multi-cycle effort to improve the state of the ZFS file system on Ubuntu desktop and eventually server releases. Ubuntu 19.10 will see the first improvements.
Apple recently released the first beta of iOS 10.3, one of the biggest features in this release, which will go largely unnoticed by users is the switch to Apple's new file system - APFS.