Delphi 2021.10b May 2026

Pro tip: If you are stuck on 2021.10b due to a third-party binary component, consider using Docker with Windows containers to keep the build environment frozen.

Absolutely – for maintenance and legacy builds.
Delphi 2021.10b represents the zenith of the 10.4 Sydney line. For developers who need a reliable, no-surprises environment to support a desktop application serving thousands of users daily, 2021.10b remains a gold standard. However, if you require modern Windows 11 UI features, full ARM64 support, or the latest high-DPI improvements, upgrading to Delphi 12.2 or later is advisable.

When you search for Delphi 2021.10b, you now know exactly what it is: the fully stabilized, hotfixed version of Delphi 10.4 Sydney Update 2—a robust chapter in Delphi’s enduring history.

Need help migrating from Delphi 2021.10b to a newer version? Consider using the free upgrade readiness tool from Embarcadero or reach out to a certified Delphi migration specialist.

Delphi 2021.10B: A Comprehensive Review of the Latest Version

Embarcadero Technologies has released the latest version of its popular integrated development environment (IDE) for building Windows, macOS, iOS, and Android applications - Delphi 2021.10B. This update brings a plethora of new features, improvements, and bug fixes that make it an attractive choice for developers looking to create high-quality, cross-platform applications. In this article, we'll take a closer look at the new features and enhancements in Delphi 2021.10B.

New Features in Delphi 2021.10B

Delphi 2021.10B is a significant update that includes several new features and improvements. Some of the key highlights include:

Improved Performance and Stability

Delphi 2021.10B includes several performance and stability improvements. Some of the key changes include:

New FMX Controls and Components

Delphi 2021.10B introduces several new FMX controls and components that make it easier to build visually appealing and feature-rich applications. Some of the new controls include:

Enhanced Mobile Support

Delphi 2021.10B includes several enhancements to support mobile app development. Some of the key changes include:

Updated IDE and Tools

The IDE has been updated with several new features and improvements, including:

Conclusion

Delphi 2021.10B is a significant update that includes several new features, improvements, and bug fixes. The update provides improved support for Windows 11, enhanced performance and stability, and several new FMX controls and components. The updated IDE and tools make it easier to build high-quality, cross-platform applications. Whether you're a seasoned developer or just starting out, Delphi 2021.10B is an excellent choice for building Windows, macOS, iOS, and Android applications.

System Requirements

To use Delphi 2021.10B, you'll need:

Pricing and Availability

Delphi 2021.10B is available for purchase from the Embarcadero website. The pricing for Delphi 2021.10B is as follows:

Conclusion

Delphi 2021.10B is a powerful and feature-rich IDE that makes it easy to build high-quality, cross-platform applications. With its improved performance, stability, and new features, it's an excellent choice for developers looking to create Windows, macOS, iOS, and Android applications. Whether you're building applications for business, education, or personal use, Delphi 2021.10B is a great option to consider.

For those unfamiliar, the 2021.10b release represents a specific firmware and software iteration for the Delphi DS150E and Autocom CDP+ clones. delphi 2021.10b

The Good:

The Bad: