docs: add release-note fragment for PR #1909 (#2087)

llm-d-router-release-notes[bot] · web-flow · commit 55d381f457cc · 2026-07-20T17:45:06.000+03:00
Signed-off-by: llm-d-router-release-notes[bot] &lt;287676111+llm-d-router-release-notes[bot]@users.noreply.github.com&gt;
Co-authored-by: llm-d-router-release-notes[bot] &lt;287676111+llm-d-router-release-notes[bot]@users.noreply.github.com&gt;
diff --git a/release-notes.d/unreleased/1909.md b/release-notes.d/unreleased/1909.md
@@ -0,0 +1,7 @@
+---
+pr: 1909
+url: https://github.com/llm-d/llm-d-router/pull/1909
+author: gkneighb
+date: 2026-07-20
+---
+EPP model-name metric labels are now bounded: names configured via InferenceModelRewrite always emit their real label, while unconfigured request-supplied names are limited to 1000 distinct values and collapse into an "other" label beyond that, preventing unbounded metric cardinality growth from arbitrary request bodies.
