I just wrote a blog post on Embarcadero community site to announce the release of InterBase 2020:
Main feature is the addition of tablespaces, which allow you to customize the mapping of tables and indexes in different files, possibly on different file systems. There is also support for macOS 64 and Android 64 as part of the embedded versions (IBLite and IBToGo). InterBase is a really unique and very poweful database engine, and one worth considering for mobile, desktop, and servers alike.
For more info, see the InterBase product page at: https://www.embarcadero.com/products/interbase