diff --git a/id3/id3v1tag.cpp b/id3/id3v1tag.cpp
index c93b0b8..0cea11d 100644
--- a/id3/id3v1tag.cpp
+++ b/id3/id3v1tag.cpp
@@ -152,7 +152,6 @@ const TagValue &Id3v1Tag::value(KnownField field) const
     case KnownField::Album:
         return m_album;
     case KnownField::RecordDate:
-    case KnownField::Year:
         return m_year;
     case KnownField::Comment:
         return m_comment;
@@ -178,7 +177,6 @@ bool Id3v1Tag::setValue(KnownField field, const TagValue &value)
         m_album = value;
         break;
     case KnownField::RecordDate:
-    case KnownField::Year:
         m_year = value;
         break;
     case KnownField::Comment:
@@ -210,7 +208,6 @@ bool Id3v1Tag::hasField(KnownField field) const
         return !m_artist.isEmpty();
     case KnownField::Album:
         return !m_album.isEmpty();
-    case KnownField::Year:
         return !m_year.isEmpty();
     case KnownField::Comment:
         return !m_comment.isEmpty();
@@ -252,7 +249,6 @@ bool Id3v1Tag::supportsField(KnownField field) const
     case KnownField::Artist:
     case KnownField::Album:
     case KnownField::RecordDate:
-    case KnownField::Year:
     case KnownField::Comment:
     case KnownField::TrackPosition:
     case KnownField::Genre:
diff --git a/id3/id3v2frameids.h b/id3/id3v2frameids.h
index 73cab2c..56b739f 100644
--- a/id3/id3v2frameids.h
+++ b/id3/id3v2frameids.h
@@ -19,7 +19,6 @@ enum KnownValue : std::uint32_t {
     lRecordingDates = 0x54524441, /**< TRDA */
     lDate = 0x54444154, /**< TDAT */
     lTime = 0x54494D45, /**< TIME */
-    lRecordDate = 0x54445243, /**< FIXME v10: remove in favor of lRecordingTime */
     lRecordingTime = 0x54445243, /**< TDRC */
     lReleaseTime = 0x5444524C, /**< TDRL */
     lOriginalReleaseTime = 0x54444F52, /**< TDOR */
diff --git a/id3/id3v2tag.cpp b/id3/id3v2tag.cpp
index 7065d86..a93f0ee 100644
--- a/id3/id3v2tag.cpp
+++ b/id3/id3v2tag.cpp
@@ -28,7 +28,6 @@ bool Id3v2Tag::supportsMultipleValues(KnownField field) const
     switch (field) {
     case KnownField::Album:
     case KnownField::Artist:
-    case KnownField::Year:
     case KnownField::RecordDate:
     case KnownField::ReleaseDate:
     case KnownField::Title:
@@ -142,7 +141,6 @@ Id3v2Tag::IdentifierType Id3v2Tag::internallyGetFieldId(KnownField field) const
         case KnownField::Comment:
             return lComment;
         case KnownField::RecordDate:
-        case KnownField::Year:
             return lRecordingTime; // (de)serializer takes to convert to/from lYear/lRecordingDates/lDate/lTime
         case KnownField::ReleaseDate:
             return lReleaseTime;
@@ -193,7 +191,6 @@ Id3v2Tag::IdentifierType Id3v2Tag::internallyGetFieldId(KnownField field) const
         case KnownField::Comment:
             return sComment;
         case KnownField::RecordDate:
-        case KnownField::Year:
             return lRecordingTime; // (de)serializer takes to convert to/from sYear/sRecordingDates/sDate/sTime
         case KnownField::Title:
             return sTitle;
diff --git a/matroska/matroskatag.cpp b/matroska/matroskatag.cpp
index 25b9a58..8e5fac3 100644
--- a/matroska/matroskatag.cpp
+++ b/matroska/matroskatag.cpp
@@ -28,7 +28,6 @@ MatroskaTag::IdentifierType MatroskaTag::internallyGetFieldId(KnownField field)
     case KnownField::Comment:
         return std::string(comment());
     case KnownField::RecordDate:
-    case KnownField::Year:
         return std::string(dateRecorded());
     case KnownField::ReleaseDate:
         return std::string(dateRelease());
diff --git a/mp4/mp4ids.h b/mp4/mp4ids.h
index f59e410..e3c0ae1 100644
--- a/mp4/mp4ids.h
+++ b/mp4/mp4ids.h
@@ -22,7 +22,6 @@ enum KnownValue : std::uint32_t {
     DataInformation = 0x64696e66, /**< dinf */
     DataReference = 0x64726566, /**< dref */
     Drms = 0x64726D73, /**< drms */
-    Edts = 0x65647473, /**< FIXME v10: remove in next major release */
     Edit = 0x65647473, /**< edts */
     EditList = 0x656C7374, /**< elst */
     Free = 0x66726565, /**< free */
diff --git a/mp4/mp4tag.cpp b/mp4/mp4tag.cpp
index ccc9a41..30dd210 100644
--- a/mp4/mp4tag.cpp
+++ b/mp4/mp4tag.cpp
@@ -128,7 +128,6 @@ Mp4Tag::IdentifierType Mp4Tag::internallyGetFieldId(KnownField field) const
     case KnownField::Comment:
         return Comment;
     case KnownField::RecordDate:
-    case KnownField::Year:
         return Year;
     case KnownField::Title:
         return Title;
diff --git a/tag.h b/tag.h
index 2d3ccce..4b359ab 100644
--- a/tag.h
+++ b/tag.h
@@ -45,7 +45,6 @@ enum class KnownField : unsigned int {
     Album, /**< album/collection */
     Artist, /**< artist/band */
     Genre, /**< genre */
-    Year, /**< record date, deprecated - FIXME v10: remove in favor of RecordDate and ReleaseDate */
     Comment, /**< comment */
     Bpm, /**< beats per minute */
     Bps, /**< beats per second */
@@ -93,7 +92,8 @@ constexpr unsigned int knownFieldArraySize = static_cast<unsigned int>(lastKnown
  */
 constexpr bool isKnownFieldDeprecated(KnownField field)
 {
-    return field == KnownField::Year;
+    CPP_UTILITIES_UNUSED(field)
+    return false;
 }
 
 /*!
diff --git a/vorbis/vorbiscomment.cpp b/vorbis/vorbiscomment.cpp
index c56c9aa..bc5c00e 100644
--- a/vorbis/vorbiscomment.cpp
+++ b/vorbis/vorbiscomment.cpp
@@ -57,7 +57,6 @@ VorbisComment::IdentifierType VorbisComment::internallyGetFieldId(KnownField fie
     case KnownField::Cover:
         return std::string(cover());
     case KnownField::RecordDate:
-    case KnownField::Year:
         return std::string(date());
     case KnownField::Title:
         return std::string(title());