Support for the recently released Visual Studio 2019 RTM, including but not limited to supporting the “async packages auto-load” API in Visual Studio 2019. 

The tooltip that shows the expression type (Cmd/Ctrl-hover) in JavaScript and TypeScript files now has a syntax highlighting. 

AutoMapper 8.1 adds a major new feature - attribute-based maps. Attribute maps let you easily declare maps on destination types when you have straightforward scenarios. Instead of: 

public class OrderProfile {  
    public OrderProfile() {
        CreateMap<Order, OrderIndexModel>();
        CreateMap<Order, OrderEditModel>();
        CreateMap<Order, OrderCreateModel>();
    }
}

You can declare your type maps directly on the destination types themselves with AutoMapAttribute: 

[AutoMap(typeof(Order))]
public class OrderIndexModel {  
    // members
}

[AutoMap(typeof(Order))]
public class OrderEditModel {  
    // members
}

[AutoMap(typeof(Order))]
public class OrderCreateModel {  
    // members
}

The .NET Framework 4.8 includes an updated toolset as well as improvements in several areas:

• [Runtime] JIT and NGEN Improvements
• [BCL] Updated ZLib
• [BCL] Reducing FIPS Impact on Cryptography
• [WinForms] Accessibility Enhancements
• [WCF] Service Behavior Enhancements
• [WPF] High DPI Enhancements, UIAutomation Improvements 

jQuery has a new release! It’s been a while since our last release, but we expect this to be the last minor release in the 3.x branch, and then we will move on to the overhaul that will be jQuery 4.0. But before we get to 4.0, we’re excited to share the bug fixes and improvements included in jQuery 3.4.0 

the .NET Core April 2019 Update. These updates contain security and reliability fixes.  

Let’s dive in and see what’s new in TypeScript 3.4!

- Faster subsequent builds with the --incremental flag
- Higher order type inference from generic functions
- Improvements for ReadonlyArray and readonly tuples
- const assertions
- Type-checking for globalThis
- Convert parameters to destructured object
- Breaking changes 

Announcing TypeScript 3.4 RC 

Bootstrap v4.3 has landed with over 120 combined closed issues and merged pull requests. This release brings improvements to our utilities, some prep work for moving on to v5’s development, and the standard bug fixes and documentation updates. 

What's new in TypeScript 3.3 RC

1. Improved behavior for calling union types
   
2. Incremental file watching for composite projects in --build --watch