Jetpack XR SDK 1.0.0 Is Stable: ARCore and SceneCore GA, What Moves in 1.1 Alpha

On October 21, 2026 the core of the Jetpack XR SDK left preview: androidx.xr.arcore and androidx.xr.scenecore both shipped 1.0.0. The release notes for 1.0.0 itself are short, so this post covers what stable commits you to, the sibling XR Compose beta02 you will actually hit in a build, and the 1.1.0-alpha01 line that opened the same day. If you followed the 1.0.0-beta01 breaking changes, this is the follow-through.

1. What 1.0.0 Stable Covers

Per the AndroidX release notes, ARCore for Jetpack XR 1.0.0 lists these capabilities: motion tracking, persistent anchors, hit testing, plane identification with semantic labeling (floor, walls, tabletops) and geospatial poses using Google's Visual Positioning System. SceneCore 1.0.0 is described as the library for placing and arranging 3D content as entities: 2D panels and 3D models in virtual and mixed-reality scenes, spatial environments and spatial audio sources, and anchoring virtual content to the real world.

2. XR Compose Is Not Stable Yet

The UI layer, androidx.xr.compose:compose, was at 1.0.0-beta02 the same day, and the page showed no stable section. It is the library most app code touches, so its notes matter most. Changes in beta02:

• Libraries now target Kotlin 2.2 and require kotlinc 2.2.
• FollowMode.soft() parameters changed as the algorithm moved from smoothStep to exponentialDecay; halfLifeMs is renamed halfLifeMillis. The changelog is inconsistent here, so check the API reference for the final signature.
• PitchLimits is now an @JvmInline value class packing two floats into a Long.
• The deprecated SpatialActivityPanel overload is removed; use the one taking a SpatialActivityPanelController.
• Deprecated movable modifiers are removed. Use the modifier taking a MovePolicy. DragPolicy is gone; use SubspaceModifier.movable().
• Stateless Slider and RangeSlider overloads are deprecated in favor of stateful ones; RangeSliderState.activeRangeStart/activeRangeEnd became startValue/endValue.
• You can transition between 3D and 2D composable content within one Activity, gated by SpatialComposeFlags.isMainPanelResetOnSubspaceDisposeEnabled.

dependencies {
    implementation("androidx.xr.compose:compose:1.0.0-beta02")
    testImplementation("androidx.xr.compose:compose-testing:1.0.0-beta02")
}

3. The SceneCore Leak Workaround

This one is easy to miss. XR Compose 1.0.0-beta02 depends on androidx.xr.scenecore:1.0.0-rc01, which has a known memory leak. The release notes say to explicitly override the SceneCore dependency to 1.0.0, which includes the fix. In Gradle that is a direct declaration:

dependencies {
    implementation("androidx.xr.compose:compose:1.0.0-beta02")
    // beta02 pulls scenecore 1.0.0-rc01 (known leak); pin the stable fix
    implementation("androidx.xr.scenecore:scenecore:1.0.0")
}

The notes do not give the exact coordinates, so I used the same scenecore artifact name that the 1.1.0-alpha01 dependency block uses. Confirm in your dependency report that the resolved version is 1.0.0.

4. What 1.1.0-alpha01 Adds

Both libraries opened a 1.1 line on October 21. These are alpha APIs and may change.

ARCore 1.1.0-alpha01

• New SpatialAnnotation API for tracking 3D physical geometries and objects, with SpatialAnnotationTrackingOptions (builder pattern) to configure tracking through camera image buffers, and SpatialAnnotationTrackingMode for bounded quadrilateral (Quad) geometries.
• TestSpatialAnnotation for simulating annotations in automated tests.
• More Geospatial state: geospatialPose, horizontalAccuracy, verticalAccuracy and orientationYawAccuracy. The notes do not name the owning class, so check the reference.
• Configuring AugmentedImage with a max image count of 0 now throws UnsupportedOperationException.

SceneCore 1.1.0-alpha01

• Dynamic meshes: MeshBuffer.createDynamic, MeshBuffer.updateVertexData, MeshBuffer.updateIndexData and a dynamic CustomMesh.BuilderFromMeshData constructor. CustomMesh.bounds is now a var.
• glTF animation simplified: GltfAnimation.start() takes no parameters, with new loop and speed properties and GltfModelEntity.stopAllAnimations(). GltfAnimationStartOptions, start(options) and seekTo(Duration) are deprecated.
• GltfModelEntity APIs now document that they throw IllegalStateException (Entity.DisposedException) on disposed entities.

// before (deprecated in 1.1.0-alpha01)
animation.start(GltfAnimationStartOptions(/* ... */))

// after
animation.loop = true
animation.speed = 1.0f
animation.start()

The exact property types are my reading of the notes, which list the names but not signatures, so verify against the reference before copying.

What I'd Do

If you are shipping on the stable libraries, pin ARCore and SceneCore to 1.0.0 and treat the 1.1 alphas as a place to prototype, not depend on. If you use XR Compose, expect one more round of source changes before it goes stable, and fix the SceneCore override now. Migrate off the deprecated movable modifiers and DragPolicy today; they are already removed in beta02.

Sources: AndroidX release notes for ARCore for Jetpack XR, XR SceneCore and Jetpack Compose for XR on developer.android.com, all dated October 21, 2026.