Update Language Feature Status.md (#34680)

docs/Language Feature Status.md

@@ -10,7 +10,7 @@ efforts behind them.
 
 | Feature | Branch | State | Developers | Reviewer | LDM Champ |
 | ------- | ------ | ----- | ---------- | -------- | --------- |
-| [Default Interface Methods](https://github.com/dotnet/csharplang/blob/master/proposals/default-interface-methods.md) | [defaultInterfaceImplementation](https://github.com/dotnet/roslyn/tree/features/DefaultInterfaceImplementation) | [Prototype](https://github.com/dotnet/roslyn/issues/19217) | [AlekseyTs](https://github.com/AlekseyTs) | [gafter](https://github.com/gafter) | [gafter](https://github.com/gafter) |
+| [Default Interface Methods](https://github.com/dotnet/csharplang/blob/master/proposals/default-interface-methods.md) | [defaultInterfaceImplementation](https://github.com/dotnet/roslyn/tree/features/DefaultInterfaceImplementation) | [Merged to dev16.1 preview2](https://github.com/dotnet/roslyn/issues/19217) | [AlekseyTs](https://github.com/AlekseyTs) | [gafter](https://github.com/gafter) | [gafter](https://github.com/gafter) |
 | [Nullable reference type](https://github.com/dotnet/csharplang/blob/master/proposals/nullable-reference-types.md) | [NullableReferenceTypes](https://github.com/dotnet/roslyn/tree/features/NullableReferenceTypes) | [Merged to dev16.0 preview1](https://github.com/dotnet/roslyn/issues/22152) | [cston](https://github.com/cston), [jcouv](https://github.com/jcouv) | [AlekseyTs](https://github.com/AlekseyTs), [333fred](https://github.com/333fred) | [mattwar](https://github.com/mattwar) |
 | [Recursive patterns](https://github.com/dotnet/csharplang/blob/master/proposals/patterns.md) | [recursive-patterns](https://github.com/dotnet/roslyn/tree/features/recursive-patterns) | [Merged to dev16.0 preview2](https://github.com/dotnet/roslyn/issues/25935) | [gafter](https://github.com/gafter) | [agocke](https://github.com/agocke), [cston](https://github.com/cston) | [gafter](https://github.com/gafter) |
 | [Async streams](https://github.com/dotnet/csharplang/blob/master/proposals/async-streams.md) | [async-streams](https://github.com/dotnet/roslyn/tree/features/async-streams) | [Merged to dev16.0 preview1](https://github.com/dotnet/roslyn/issues/24037) | [jcouv](https://github.com/jcouv) |  [agocke](https://github.com/agocke) | [stephentoub](https://github.com/stephentoub) |
@@ -26,14 +26,14 @@ efforts behind them.
 | [stackalloc in nested contexts](https://github.com/dotnet/csharplang/issues/1412) | [nested-stackalloc](https://github.com/dotnet/roslyn/tree/features/nested-stackalloc) | [In Progress](https://github.com/dotnet/roslyn/issues/28968) | [gafter](https://github.com/gafter) | - | [gafter](https://github.com/gafter)
 | [Unmanaged generic structs](https://github.com/dotnet/csharplang/issues/1744) | master | [Merged to dev16.1 preview1](https://github.com/dotnet/roslyn/issues/31374) | [RikkiGibson](https://github.com/RikkiGibson) | - | [jaredpar](https://github.com/jaredpar) |
 | [Static local functions](https://github.com/dotnet/csharplang/issues/1565) | master | [Merged in dev16.0 preview2](https://github.com/dotnet/roslyn/issues/32069) | [cston](https://github.com/cston) | [jaredpar](https://github.com/jaredpar) | [jcouv](https://github.com/jcouv)
-| [Readonly members](https://github.com/dotnet/csharplang/issues/1710) | [readonly-members](https://github.com/dotnet/roslyn/tree/features/readonly-members) | [Prototype](https://github.com/dotnet/roslyn/issues/32911) | [RikkiGibson](https://github.com/RikkiGibson) | TBD | [jaredpar](https://github.com/jaredpar)
+| [Readonly members](https://github.com/dotnet/csharplang/issues/1710) | [readonly-members](https://github.com/dotnet/roslyn/tree/features/readonly-members) | [Merged to dev16.1 preview2](https://github.com/dotnet/roslyn/issues/32911) | [RikkiGibson](https://github.com/RikkiGibson) | TBD | [jaredpar](https://github.com/jaredpar)
 
 # VB 16.0
 
 | Feature | Branch | State | Developers | Reviewer | LDM Champ |
 | ------- | ------ | ----- | ---------- | -------- | --------- |
-| [Line continuation comments](https://github.com/dotnet/vblang/issues/65) | [continuation-comments](https://github.com/dotnet/roslyn/tree/features/continuation-comments) | Prototype | [paul1956](https://github.com/paul1956) | [AlekseyTs](https://github.com/AlekseyTs) | [gafter](https://github.com/gafter) |
-| [Relax null coalesing operator requirements](https://github.com/dotnet/vblang/issues/339) | [null-operator-enhancements](https://github.com/dotnet/roslyn/tree/features/null-operator-enhancements) | In Progress | [333fred](https://github.com/333fred) | [cston](https://github.com/cston) | [gafter](https://github.com/gafter) |
+| [Line continuation comments](https://github.com/dotnet/vblang/issues/65) | [continuation-comments](https://github.com/dotnet/roslyn/tree/features/continuation-comments) | Merged in 16.1 (preview2) | [paul1956](https://github.com/paul1956) | [AlekseyTs](https://github.com/AlekseyTs) | [gafter](https://github.com/gafter) |
+| [Relax null-coalescing operator requirements](https://github.com/dotnet/vblang/issues/339) | [null-operator-enhancements](https://github.com/dotnet/roslyn/tree/features/null-operator-enhancements) | Merged in 16.0 | [333fred](https://github.com/333fred) | [cston](https://github.com/cston) | [gafter](https://github.com/gafter) |
 
 # C# 7.3