diff --git a/en-US/A.xml b/en-US/A.xml
index 75cf57e..5b4dcf8 100644
--- a/en-US/A.xml
+++ b/en-US/A.xml
@@ -94,22 +94,14 @@
- a.m.
-
+ AM
-
- Use lowercase with periods, such as "11 a.m.". Use a nonbreaking space between the numeral and "a.m.".
-
-
+ For times of day, use uppercase without periods, and use a preceding nonbreaking space after the numeral, for example "11 AM".
+
See also .
-
diff --git a/en-US/Language.xml b/en-US/Language.xml
index 22aec39..6a76d1d 100644
--- a/en-US/Language.xml
+++ b/en-US/Language.xml
@@ -1265,25 +1265,23 @@ Numbers (move from N entry) -->
Exception: Use of an all-numeric representation is allowed when space is limited, as in a user interface, or to enhance readability. In such cases, use the ISO date format with a 4-digit year (YYYY-MM-DD) and define the format in a header or legend.
- For times of day, use lowercase with periods, such as "11 a.m.". Use a nonbreaking space between the numeral and "a.m." or "p.m.".
-
-
+
- Use "noon" or "12 noon" instead of "12 p.m.".
- Use "midnight" or "12 midnight" instead of "12 a.m.".
+ Use "noon" or "12 noon" instead of "12 PM".
+ Use "midnight" or "12 midnight" instead of "12 AM".
Examples
- The training class begins at 10 a.m. on 1 April 2021.
+ The training class begins at 10 AM on 1 April 2021.
+
+
- The coffee break is from 2:00 p.m. to 2:30 p.m.
+ The coffee break is from 2:00 PM to 2:30 PM.
diff --git a/en-US/P.xml b/en-US/P.xml
index 52325fd..31aa693 100644
--- a/en-US/P.xml
+++ b/en-US/P.xml
@@ -121,21 +121,14 @@
- p.m.
+ PM
-
- Use lowercase with periods, such as "2 p.m.". Use a nonbreaking space between the numeral and "p.m.".
-
-
+ For times of day, use uppercase without periods, and use a preceding nonbreaking space after the numeral, for example "2 PM".
+
See also .
-
diff --git a/en-US/rel_notes.md b/en-US/rel_notes.md
new file mode 100644
index 0000000..1781a79
--- /dev/null
+++ b/en-US/rel_notes.md
@@ -0,0 +1,25 @@
+# Red Hat Style Guide: Version 5.0 Release Notes, July 2021
+
+Changed guide title to “Red Hat Technical Writing Style Guide”. Changed subtitle to “Style Conventions for Writers and Editors”.
+
+Added inclusive language guidance.
+
+Added section on use of relative pronoun “that”.
+
+Added sections on exclamation points and referring to punctuation marks.
+
+Clarified that sentence case is required for captions, legends, and diagram labels.
+
+Added section on phrasal verbs (two-word verb forms).
+
+Added more categories of ambiguities to avoid.
+
+Dates and Times: Changed times of day standard from “a.m.”, “p.m.” to “AM”, “PM”.
+
+Usage A-Z added entries: appendixes, as long as, blacklist, colocate/colocation, display, following, i.e., indexes, login/log in/log in to, master, sign in/sign in to, slave, whitelist, wish
+
+Updated entries: backwards-compatible, high-availability, hostname, lifecycle, OK, please, setup, username, ZIP Code
+
+Removed guidance about DocBook and markup, to focus instead on writing.
+
+Minor edits so the guide itself conforms more fully with its own advice.
\ No newline at end of file