AI, Nanite, and Beyond: What’s New in Unreal Engine 5.7 Preview

Unreal Engine 5.7 Preview introduces powerful new tools and enhancements for creators. Explore production-ready PCG, real-time vegetation creation, Nanite Foliage, MegaLights, and expanded MetaHuman capabilities, alongside a glimpse into the upcoming Epic Developer Assistant for AI-powered workflows.

The team at Epic Games has just unveiled the Unreal Engine 5.7 Preview, offering a tantalizing glimpse into the future of real-time content creation. This significant update opens the door to a suite of new tools and creative enhancements, showcasing the continued evolution of UE as a leading platform for game development, virtual production, and architectural visualization. The preview highlights Epic’s commitment to empowering creators with more intuitive, powerful, and integrated workflows, pushing the boundaries of what’s possible directly within the engine.

One of the most anticipated features moving into the spotlight is the Procedural Content Generation Framework (PCG), now officially Production-Ready. This means greater stability, extensibility, and significant GPU performance improvements, making it almost twice as fast as it was in UE 5.5. Creators will find it easier and more flexible to integrate PCG into their projects, leveraging new features like GPU parameter overrides for dynamic adjustments and enhanced scaling for multiplatform development. Furthermore, a dedicated PCG-specific editor mode with customizable tools allows for drawing splines, painting, or creating volumes, alongside the ability to execute PCG Graphs as standalone assets.

Bringing Environments to Life: Vegetation and Lighting Breakthroughs

Building on the foundation of PCG, an exciting new Experimental plugin, the Procedural Vegetation Editor, enables artists to grow, shape, and customize Nanite-ready foliage directly within Unreal Editor. Imagine sculpting unique trees and forests in real-time without ever needing to round-trip to third-party tools! This node-graph-based system allows for intricate control over gravity, scaling, leaf and branch layouts, and easy model swapping, generating endless variations for rich project libraries. Keep an eye out for the new Quixel Megaplants assets on Fab with the full 5.7 release.

Complementing this, Nanite Foliage also ships as Experimental, introducing an industry-leading rendering path for dense, high-detail foliage. This powerful system, built on Nanite Assemblies, Nanite Skinning, and Nanite Voxel, enables smooth animation and rendering at 60 fps on current-gen hardware, preserving incredible detail and material characteristics at any distance with remarkable efficiency. This represents a significant leap forward in creating truly immersive and lifelike natural environments.

Lighting gets a major boost too, as MegaLights is now in Beta. This update brings support for directional lights, Niagara particle lights, translucency lighting, and hair grooms. With new performance tuning controls for resolution scale and update rate, along with improved noise reduction, users can expect better out-of-the-box performance for stunning illumination.

Material Mastery and MetaHuman Advancements

The highly anticipated Substrate materials move into full production-readiness, replacing fixed shading models with a modular system that offers unparalleled expressive control and flexibility. This allows for combining multiple material layers—such as metal, clear coat, skin, and cloth—with true high-quality physical accuracy, delivering breathtaking realism and scalability. Whether utilizing the Adaptive GBuffer for advanced effects or the Blendable GBuffer for broad platform compatibility, Substrate empowers artists to achieve previously impossible material complexity.

For character artists, the MetaHuman Creator plugin is now available for Linux and macOS, significantly expanding accessibility. Furthermore, the MetaHuman Creator Python and Blueprint API enable scripting of nearly all editing and assembly operations for MetaHuman Character assets, streamlining workflows for developers. Enhancements include improved body-pose-agnostic conform support and UV-space vertex correspondence. The full 5.7 release promises real-time animation generation from an external camera using Live Link Face on an iPad or Android device, further blurring the lines between digital and reality. More details can be found in the in-depth MetaHuman 5.7 Preview announcement.

Streamlined Animation, Rigging, and the Dawn of AI Assistance

Animation workflows continue to evolve with new Experimental improvements like Selection Sets, providing quicker access to multiple controls within rigs and allowing teams to share sets for consistency. The Animation mode refactor improvements offer a slimmer panel for tools, freeing up viewport space, and an updated Constraint UX window unifies Space, Constraints, and Snapper into a single, accessible interface.

Rigging tools also see experimental enhancements, including Blend shapes and Sculpting for industry-standard sculpting workflows directly in Unreal Engine. Updates to the Skeletal Editor tools enable seamless creation and editing of morph shapes, bones, and skin weights. Physics World Collisions ensure realistic character interactions, and the Dependency View aids in faster debugging and optimization by visualizing data flow through rigs.

Perhaps one of the most exciting glimpses into the future is the upcoming Epic Developer Assistant. While its UI is visible in the preview, this groundbreaking AI-powered tool will officially launch with the full 5.7 release. It promises instant answers, guidance, and C++ code generation directly within the Unreal Editor, allowing developers to stay in their creative flow without ever needing to switch to a browser. This marks Epic Games’ significant first step on their AI journey, offering unprecedented in-engine support.

Important Notes for Testing

As with all preview releases, Unreal Engine 5.7 Preview is still under active development and should be considered unstable. The team at Epic Games recommends making a copy of your projects for testing these builds rather than converting your main projects. This ensures a smooth workflow while you explore the exciting new possibilities.

The Unreal Engine 5.7 Preview is available for download on the Epic Games Launcher, GitHub, and for Linux and macOS. These powerful updates are freely accessible, continuing Epic’s tradition of democratizing high-end creation tools.

This preview showcases a commitment to refining existing systems and introducing revolutionary new ones, all aimed at enhancing the creator’s experience. From making procedural generation more robust to pushing the boundaries of real-time character animation and environmental detail, Unreal Engine 5.7 is poised to be a game-changer. Don’t miss out on exploring these features and preparing for the full release!

For more detailed insights into the latest advancements and to keep up with all the exciting developments, be sure to check out our dedicated section on Unreal Engine Updates & Releases. If you’re passionate about crafting immersive digital worlds, dive deeper into our resources on Environment & World Building. And for those focused on bringing characters to life, explore our comprehensive guides on Characters & Animation.

Sources:
Unreal Engine 5.7 Preview – General / Announcements – Epic Developer Community Forums
MetaHuman 5.7 Preview Released! – General / Announcements – Epic Developer Community Forums

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