diff --git a/README.md b/README.md
index 8961c0b..3a0acc0 100644
--- a/README.md
+++ b/README.md
@@ -506,6 +506,8 @@ KTX2 Support Status
 
 Note as of March 2026 we are working with Khronos on the exact details of how we embed XUASTC LDR supercompressed texture data into the KTX2 file format. KTX2 texture files using our previous codecs (including the recently added UASTC HDR 4x4 and UASTC HDR 6x6i formats) can now be interchanged with KTX-Software. See our [KTX2 technical information document](https://github.com/BinomialLLC/basis_universal/wiki/KTX2-File-Format-Support-Technical-Details) for more info.
 
+Whenever possible, we keep full introspection/transcode compatibility with all of our previously written KTX2 files, even if during standardization a file format change is made. We don't expect how we embed XUASTC LDR into KTX2 in basisu v2.1 to change.
+
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 Repository Licensing with REUSE