diff --git a/Changelog.asciidoc b/Changelog.asciidoc
index 36cd3412..8bc95d62 100644
--- a/Changelog.asciidoc
+++ b/Changelog.asciidoc
@@ -6,9 +6,9 @@ v1.4B2 (2018.2 B2)::
 Changes since v1.3:
 
 * FUSE3 API (version 3.2) is now available. The FUSE2 API (version 2.8) also remains supported.
-* New `Control` file system operation allows sending custom control codes to the file system using the Windows `DeviceIoControl` API.
+* New `Control` file system operation allows sending custom control codes to the file system using the Windows `DeviceIoControl` API. FUSE `ioctl` is also supported.
 * `FlushAndPurgeOnCleanup` has now been added to the .NET API. (GitHub PR #176; thanks @FrKaram.)
-* New sample file system "airfs" contributed by @JohnOberschelp.
+* New sample file system "airfs" contributed by @JohnOberschelp. Airfs is an in-memory file system like Memfs on which it is based on; it has received substantial improvements in how the file name space is maintained and has been modified to use modern C++ techniques by John.
 * New sample file system "passthrough-fuse3" passes all operations to an underlying file system. This file system is built using the FUSE3 API. It builds and runs on both Windows and Cygwin.