- To enhance usability and developer experience, CRD validation rules now support direct use of (CEL) reserved keywords as field names in object validation expressions for existing expressions in storage, will fully support runtime in next release for compatibility concern. ([#126188](https://github.com/kubernetes/kubernetes/pull/126188), [@cici37](https://github.com/cici37))...

  - `CustomPodDNS`
  - `HugePages`
  - `MountPropagation`
  - `PersistentLocalVolumes`
- CoreDNS: The following directives or keywords are deprecated and will be removed in v1.15:
  - `upstream` option of `kubernetes` plugin, becoming default behavior in v1.15.
  - `proxy` plugin replaced by `forward` plugin

## Removed and deprecated metrics

pkg go/constant, func Make(interface{}) Value
pkg go/constant, func Val(Value) interface{}
pkg go/token, func IsExported(string) bool
pkg go/token, func IsIdentifier(string) bool
pkg go/token, func IsKeyword(string) bool
pkg go/types, func CheckExpr(*token.FileSet, *Package, token.Pos, ast.Expr, *Info) error
pkg log, func Writer() io.Writer
pkg log/syslog (netbsd-arm64-cgo), const LOG_ALERT = 1

2300          ; valid                  ;      ; NV8    # 1.1  DIAMETER SIGN
2301          ; valid                  ;      ; NV8    # 3.0  ELECTRIC ARROW
2302..2328    ; valid                  ;      ; NV8    # 1.1  HOUSE..KEYBOARD
2329          ; mapped                 ; 3008          # 1.1  LEFT-POINTING ANGLE BRACKET
232A          ; mapped                 ; 3009          # 1.1  RIGHT-POINTING ANGLE BRACKET

pkg go/token, method (*Position) IsValid() bool
pkg go/token, method (Pos) IsValid() bool
pkg go/token, method (Position) String() string
pkg go/token, method (Token) IsKeyword() bool
pkg go/token, method (Token) IsLiteral() bool
pkg go/token, method (Token) IsOperator() bool
pkg go/token, method (Token) Precedence() int
pkg go/token, method (Token) String() string