Today, Db2 for z/OS shipped the IBM Db2 for z/OS Developer Extension for vscode. It is a no-charge extension to vscode that delivers syntax highlighting and snippets. If you have developers who use vscode, you may want to recommend it to them. There will be additional features rolling out throughout the year.
They can find it directly in the Visual Studio Code marketplace. Here's the landing page:
Other vscode extensions developers may find useful are IBM Z Open Editor vscode extension for COBOL, PL1, and Assembler, and the Zowe vscode extension that enables browsing MVS, USS, and SDSF.