Android Studio Quail 4 RC 1 Arrives in Beta with AGP 9.4.0-rc01 and a Critical Gemini Fix

Android Studio Quail 4 has moved one step closer to a final release with the arrival of its first Release Candidate. RC 1 is now live on the Beta channel, and it ships alongside Android Gradle Plugin 9.4.0-rc01. For Flutter developers and Android teams alike, a release candidate is a meaningful milestone because it signals that the feature set is effectively frozen and the focus has shifted to polish, stability, and last-mile bug fixes.

Developers already on the Beta channel can pull the update directly through the Check for Updates menu inside the IDE, while anyone new to the preview can download the build from the official preview page. As with all preview software, it is worth reiterating that Release Candidates are intended for testing and validation rather than for everyday production work.

A Release Candidate Brings Things Into Focus

The Lucid line of Android Studio releases has been evolving steadily through the Canary and Beta channels over the past several weeks. Each intermediate build carried incremental improvements, and RC 1 consolidates that work into a single, more reliable baseline. Reaching the release candidate stage means the Android engineering team believes the current set of features and fixes is ready for broader validation before the stable rollout.

The pairing with Android Gradle Plugin 9.4.0-rc01 is particularly important. Gradle plugin versions are tightly coupled to IDE behavior, and the release candidate designation gives teams confidence that the build tooling is stable enough to evaluate against real projects without wholesale breakage.

• The first Release Candidate of Quail 4 is available on the Beta channel
• Bundled with Android Gradle Plugin 9.4.0-rc01 for the whole toolchain
• Includes an S0-critical fix for a Gemini data-loss issue
• Signals a feature freeze ahead of the stable release
• Recommended for validation, not for production workloads

The fixed issues list for this build includes at least one entry that demands attention. A Gemini-related bug, tagged S0 critical, describes a scenario where a malformed shell command executed by the AI agent could result in data loss, specifically deleting drive contents. While the exact trigger is not fully documented in the notes, any issue carrying the highest severity rating in the data-loss category is one that everyone using Studio's AI features should take seriously.

For teams that rely heavily on agentic workflows inside the IDE, the presence of this fix in a Release Candidate is reassuring. It indicates that Google treats agent safety as a release-blocking concern rather than an afterthought. Anyone who experienced unusual behavior from the assistant during agent runs should treat this build as a strong candidate for an immediate update.

Why Quail 4 Matters for Flutter Workflows

Flutter developers tend to view Android Studio through two lenses. The first is the IDE itself, where Flutter's official plugins deliver a first-class experience for writing, debugging, and profiling Dart applications. The second is the underlying build pipeline, where the Android Gradle Plugin dictates how Flutter's Android embedding is compiled and packaged. Changes to either layer can shape daily workflows in subtle but important ways.

For most Flutter projects on the stable channel, RC builds do not demand any immediate action. Production work should remain on the stable channel, and Flutter's tooling pins to stable Android Gradle Plugin versions that are well supported and thoroughly tested. But the preview channel is still worth watching, because it previews the defaults that will eventually reach everyone.

One area where Flutter teams benefit from paying attention is build performance. Each new Android Gradle Plugin iteration tends to bring incremental gains in configuration time, incremental compilation, and task caching. Evaluating these improvements in a preview build lets engineers plan future upgrades with real data instead of guessing.

• Keep production builds on the stable channel and reserve RC for validation
• Verify that existing Gradle and AGP setups remain compatible with 9.4.0-rc01
• Test agentic features to confirm the critical Gemini fix resolved your issues
• Watch the preview release notes as Quail 4 approaches final release

Looking ahead, the path from here is fairly predictable. Following the first Release Candidate, Google typically issues a second RC if any significant issues surface, then promotes the build to the stable channel. Teams that want to be ready for the final release can use RC 1 to smoke-test their core workflows, including Flutter builds, so that the eventual stable rollout is uneventful.

For those curious about the broader trajectory, Quail 4 continues the pattern set by recent Android Studio cycles: faster release cadence, tighter integration with Gemini-powered assistance, and a growing emphasis on agent reliability. The critical fix included in this build is a reminder that as AI capabilities expand, so too does the responsibility to keep those features safe and predictable.

The bottom line for Flutter developers is straightforward. RC 1 does not change the way you build Flutter apps today, but it lays the groundwork for what becomes the stable default in the near future. Downloading it, validating your projects, and reading the release notes will put you ahead of the curve when Quail 4 officially ships.