add ef core 10 documentation

release-notes/10.0/preview/preview1/efcore.md

@@ -2,13 +2,34 @@
 
 .NET 10 Preview 1 includes new Entity Framework Core features & enhancements:
 
-- [Feature](#feature)
+- [ExecuteUpdateAsync now accepts a regular, non-expression lambda](#executeupdateasync-now-accepts-a-regular-non-expression-lambda)
+- [Several query improvements](#query-improvements)
 
-Entity Framework Core 10:
+Entity Framework Core 10 updates:
 
 - [What's new in Entity Framework Core 10](https://learn.microsoft.com/ef/core/what-is-new/ef-core-10.0/whatsnew) documentation
+- [Breaking change in Entity Framework Core 10](https://learn.microsoft.com/ef/core/what-is-new/ef-core-10.0/breaking-changes)
 
 
-## Feature
+## ExecuteUpdateAsync now accepts a regular, non-expression lambda
 
-This is something about the feature
+Creating expresion trees can be verbose, and now you can use regular, non-expression lambdas when calling `ExecuteUpdateAsync`:
+
+```c#
+await context.Blogs.ExecuteUpdateAsync(s =>
+{
+    s.SetProperty(b => b.Views, 8);
+    if (nameChanged)
+    {
+        s.SetProperty(b => b.Name, "foo");
+    }
+});
+```
+
+Thanks to [@aradalvand](https://github.com/aradalvand) for proposing and pushing for this change (in [#32018](https://github.com/dotnet/efcore/issues/32018)).
+
+## Query improvements
+
+- Translation for DateOnly.ToDateTime(timeOnly) ([#35194](https://github.com/dotnet/efcore/pull/35194), contributed by [@mseada94](https://github.com/mseada94)).
+- Optimization for multiple consecutive `LIMIT`s ([#35384](https://github.com/dotnet/efcore/pull/35384)), contributed by [@ranma42](https://github.com/ranma42)).
+- Optimization for use of `Count` operation on `ICollection<T>` ([#35381](https://github.com/dotnet/efcore/pull/35381)), contributed by [@ChrisJollyAU](https://github.com/ChrisJollyAU)).