diff --git a/CHANGELOG.md b/CHANGELOG.md
index a9ed603318..ab454a9fcb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,8 +3,14 @@
 ## unreleased
 
 * [CHANGE] Scraping: Remove implicit fallback to the Prometheus text format in case of invalid/missing Content-Type and fail the scrape instead. Add ability to specify a `fallback_scrape_protocol` in the scrape config. #15136
-* [CHANGE] Remote-write: default enable_http2 to false.
-* [ENHANCEMENT] Scraping, rules: handle targets reappearing, or rules moving group, when out-of-order is enabled. #14710 
+* [CHANGE] Remote-write: default enable_http2 to false. #15219
+* [CHANGE] Scraping: normalize "le" and "quantile" label values upon ingestion. #15164
+* [CHANGE] Scraping: config `scrape_classic_histograms` was renamed to `always_scrape_classic_histograms`. #15178
+* [CHANGE] Config: remove expand-external-labels flag, expand external labels env vars by default. #14657
+* [CHANGE] Adopt log/slog and remove go-kit/log. #14906
+* [CHANGE] Disallow configuring AM with the v1 api. #13883
+* [ENHANCEMENT] Scraping, rules: handle targets reappearing, or rules moving group, when out-of-order is enabled. #14710
+* [ENHANCEMENT] Tools: add debug printouts to promtool rules unit testing #15196
 - [BUGFIX] PromQL: Fix stddev+stdvar aggregations to always ignore native histograms. #14941
 - [BUGFIX] PromQL: Fix stddev+stdvar aggregations to treat Infinity consistently. #14941
 
@@ -54,6 +60,7 @@ As is traditional with a beta release, we do **not** recommend users install 3.0
 * [CHANGE] Remove deprecated `storage.tsdb.allow-overlapping-blocks`, `alertmanager.timeout`, and `storage.tsdb.retention` flags. #14640, #14643
 * [ENHANCEMENT] Move AM discovery page from "Monitoring status" to "Server status". #14875
 * [FEATURE] Support config reload automatically - feature flag `auto-reload-config`. #14769
+* [BUGFIX] Scrape: Do not override target parameter labels with config params. #11029
 
 ## 2.55.0 / 2024-10-22
 
@@ -88,39 +95,6 @@ As is traditional with a beta release, we do **not** recommend users install 3.0
 * [BUGFIX] Remote-Write: Return 4xx not 5xx when timeseries has duplicate label. #14716
 * [BUGFIX] Experimental Native Histograms: many fixes for incorrect results, panics, warnings. #14513, #14575, #14598, #14609, #14611, #14771, #14821
 * [BUGFIX] TSDB: Only count unknown record types in `record_decode_failures_total` metric. #14042
-* [BUGFIX] Scrape: Do not override target parameter labels with config params. #11029
-
-## 2.55.0-rc.0 / 2024-09-20
-
-* [FEATURE] Support UTF-8 characters in label names - feature flag `utf8-names`. #14482, #14880, #14736, #14727
-* [FEATURE] Support config reload automatically - feature flag `auto-reload-config`. #14769
-* [FEATURE] Scraping: Add the ability to set custom `http_headers` in config. #14817
-* [FEATURE] Scraping: Support feature flag `created-timestamp-zero-ingestion` in OpenMetrics. #14356, #14815
-* [FEATURE] Scraping: `scrape_failure_log_file` option to log failures to a file. #14734
-* [FEATURE] OTLP receiver: Optional promotion of resource attributes to series labels. #14200
-* [FEATURE] Remote-Write: Support Google Cloud Monitoring authorization. #14346
-* [FEATURE] Promtool: `tsdb create-blocks` new option to add labels. #14403
-* [FEATURE] Promtool: `promtool test` adds `--junit` flag to format results. #14506
-* [ENHANCEMENT] OTLP receiver: Warn on exponential histograms with zero count and non-zero sum. #14706
-* [ENHANCEMENT] OTLP receiver: Interrupt translation on context cancellation/timeout. #14612
-* [ENHANCEMENT] Remote Read client: Enable streaming remote read if the server supports it. #11379
-* [ENHANCEMENT] Remote-Write: Don't reshard if we haven't successfully sent a sample since last update. #14450
-* [ENHANCEMENT] PromQL: Delay deletion of `__name__` label to the end of the query evaluation. This is **experimental** and enabled under the feature-flag `promql-delayed-name-removal`. #14477
-* [ENHANCEMENT] PromQL: Experimental `sort_by_label` and `sort_by_label_desc` sort by all labels when label is equal. #14655
-* [ENHANCEMENT] PromQL: Clarify error message logged when Go runtime panic occurs during query evaluation. #14621
-* [ENHANCEMENT] PromQL: Use Kahan summation for better accuracy in `avg` and `avg_over_time`. #14413
-* [ENHANCEMENT] Tracing: Improve PromQL tracing, including showing the operation performed for aggregates, operators, and calls. #14816
-* [ENHANCEMENT] API: Support multiple listening addresses. #14665
-* [ENHANCEMENT] TSDB: Backward compatibility with upcoming index v3. #14934
-* [PERF] TSDB: Query in-order and out-of-order series together. #14354, #14693, #14714, #14831, #14874, #14948
-* [PERF] TSDB: Streamline reading of overlapping out-of-order head chunks. #14729
-* [BUGFIX] SD: Fix dropping targets (with feature flag `new-service-discovery-manager`). #13147
-* [BUGFIX] SD: Stop storing stale targets (with feature flag `new-service-discovery-manager`). #13622
-* [BUGFIX] Scraping: exemplars could be dropped in protobuf scraping. #14810
-* [BUGFIX] Remote-Write: fix metadata sending for experimental Remote-Write V2. #14766
-* [BUGFIX] Remote-Write: Return 4xx not 5xx when timeseries has duplicate label. #14716
-* [BUGFIX] Experimental Native Histograms: many fixes for incorrect results, panics, warnings. #14513, #14575, #14598, #14609, #14611, #14771, #14821
-* [BUGFIX] TSDB: Only count unknown record types in `record_decode_failures_total` metric. #14042
 
 ## 2.54.1 / 2024-08-27