diff --git a/CHANGELOG.md b/CHANGELOG.md
index b4a3452c9..cccbae7dd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,15 +2,15 @@
 
 ## 2.43.0-rc.0 / 2023-03-09
 
-We are working on some performance improvements in Prometheus, which are
-available behind the go tag `stringlabels` (therefore are not shipped in the
-default binaries). It uses a data structure for labels that uses a single string
-to hold all the label/values, resulting in a smaller heap size and some speedups
-in most cases. We would like to encourage users who are interested in these
-improvements to help us measure the gains on their production architecture.
-Building Prometheus from the source with the `stringlabels` go tag and providing
-feedback on its effectiveness in their specific use cases would be incredibly
-helpful to us. #10991
+We are working on some performance improvements in Prometheus, which are only
+built into Prometheus when compiling it using the Go tag `stringlabels`
+(therefore they are not shipped in the default binaries). It uses a data
+structure for labels that uses a single string to hold all the label/values,
+resulting in a smaller heap size and some speedups in most cases. We would like
+to encourage users who are interested in these improvements to help us measure
+the gains on their production architecture. Building Prometheus from source
+with the `stringlabels` Go tag and providing feedback on its effectiveness in
+their specific use cases would be incredibly helpful to us. #10991
 
 * [FEATURE] Promtool: Add HTTP client configuration to query commands. #11487
 * [FEATURE] Scrape: Add `include_scrape_configs` to include scrape configs from different files. #12019
@@ -21,11 +21,11 @@ helpful to us. #10991
 * [ENHANCEMENT] Scrape: Allow exemplars for all metric types. #11984
 * [ENHANCEMENT] TSDB: Add metrics for head chunks and WAL folders size. #12013
 * [ENHANCEMENT] TSDB: Automatically remove incorrect snapshot with index that is ahead of WAL. #11859
-* [ENHANCEMENT] TSDB: Improve Prometheus parser error outputs to be more comprehensive. #11682
+* [ENHANCEMENT] TSDB: Improve Prometheus parser error outputs to be more comprehensible. #11682
 * [ENHANCEMENT] UI: Scope `group by` labels to metric in autocompletion. #11914
 * [BUGFIX] Scrape: Fix `prometheus_target_scrape_pool_target_limit` metric not set before reloading. #12002
-* [BUGFIX] TSDB: Correctly update chunks removed and chunks metrics when reading WAL. #11858
-* [BUGFIX] TSDB: Observe delta in seconds `prometheus_tsdb_sample_ooo_delta`. #12004
+* [BUGFIX] TSDB: Correctly update `prometheus_tsdb_head_chunks_removed_total` and `prometheus_tsdb_head_chunks` metrics when reading WAL. #11858
+* [BUGFIX] TSDB: Use the correct unit (seconds) when recording out-of-order append deltas in the `prometheus_tsdb_sample_ooo_delta` metric. #12004
 
 ## 2.42.0 / 2023-01-31