It's not specific to the world of PHP but there was a major announcement from Microsoft yesterday about one of their products, SQL Server, and how they're officially brining it to Linux.

Today I’m excited to announce our plans to bring SQL Server to Linux as well. This will enable SQL Server to deliver a consistent data platform across Windows Server and Linux, as well as on-premises and cloud. We are bringing the core relational database capabilities to preview today, and are targeting availability in mid-2017.

[...] Bringing SQL Server to Linux is another way we are making our products and new innovations more accessible to a broader set of users and meeting them where they are.

Currently the release is in a private preview stage but more information on the release and how you can get it to install on your systems will be released in the coming months. You can sign up for updates and get more information about the product on the project website on Microsoft.com.