# Fuuz 2026.2 (February 2026) > What changed in Fuuz 2026.2 (February 2026): Application Graph; Rapid Field Edit & Entry; Improved Duplicate Key Error Handling. Source: https://www.fuuz.com/resources/releases/2026-2 Release notes February 2026. 28 changes across the platform. [All releases](https://www.fuuz.com/resources/release-notes) [Subscribe](https://www.fuuz.com/resources/release-notes#subscribe) In this release [Edge and Gateway 3](#area-edge) [Integration and Connectors 2](#area-integration) [Orchestration and Data Flows 3](#area-orchestration) [Security and Administration 2](#area-security) [Data Models and API 4](#area-data) [App Building and Packages 2](#area-apps) [Screens and User Experience 6](#area-ui) [Platform and Infrastructure 2](#area-platform) [Search all releases →](https://www.fuuz.com/resources/release-notes#browse) QA release Feb 3, 2026 Production release Feb 24, 2026 Changes 28 Integration and Connectors ### Application Graph The most eye-catching feature this month is our brand new Application Graph - a visual way to view the complex web of relationships between the components (screens, flows, and data models) that comprise an app. In this view, each node is a component, color-coded by type - purple for data models, blue for data flows, and green for screens. Each link represents a reference - a place where one application component quer… Integration and Connectors ### Rapid Field Edit & Entry Another significant new feature this month is over in our schema designer: a streamlined system for adding or quickly editing fields. Historically, adding or updating fields - changing their name, type, or metadata - has required using the properties panel, which is cumbersome when trying to quickly build out a new data model. The new rapid field entry system adds inputs to the model nodes right in the schema diagram… Screens and User Experience ### Improved Duplicate Key Error Handling With this month's release, we've finally addressed an issue we've wanted to fix for years: duplicate key errors! If you've been using Fuuz for some time, you may be familiar with the cryptic "duplicate key error" messages which arose when unique indexes were violated (e.g. a user tried to create two records with the same name). Those errors have annoyed us from the very beginning, but we were handcuffed by the data r… Edge and Gateway ### Device Subscription Streaming Optimizations As part of our solution for the ProveIT! 2026 conference, we've built a historian which consumes large amounts of data from their MQTT broker via our Edge Gateway. As the solution scaled, we noticed a few bottlenecks in the data pipeline. We've implemented a round of performance optimizations throughout that pipeline, allowing our showcase to scale to match the scope of the ProveIT UNS... and benefiting existing cust… ## Edge and Gateway ### New - **Added ENV argument to simplify passing an API key to a containerized gateway deployment** Integration › Edge Gateway - **Implemented a variety of performance optimizations to reduce overhead in device subscription data streaming** Integration › Edge Gateway - **Added support for the $executeTransform binding in gateway screens** Integration › Edge Gateway ## Integration and Connectors ### New - **Added simplified system for creating inter-tenant integration connections from the target app tenant** Integration › Integration Platform ### Improved - **Updated to latest NetSuite ODBC certs** Integration › Integration Platform ## Orchestration and Data Flows ### New - **Added "MCP Tool Enabled" column to default table view when MCP Server beta is enabled** Orchestration › Data Flow System ### Improved - **Converted transformation microservice to TypeScript** Orchestration › Data Flow System ### Fixed - **Fixed several small bugs in the scheduling configuration system** Orchestration › Schedule Engine ## Security and Administration ### Improved - **Updated user login flow to automatically select the first assigned role if no default is selected, so users are no longer prompted to select a role on sign-in** Data › Security & Administration - **Updated password policy schema to no longer require a maximum length** Data › Security & Administration ## Data Models and API ### New - **Added system for rapidly adding and modifying data model fields in the diagram node** Data › Schema Designer - **Added configuration option to entirely disable publishing data change events** Data › Schema Designer - **Added human-readable error formatting for common MongoDB errors (e.g. duplicate key errors)** Data › GraphQL API ### Fixed - **Corrected an edge case causing _and / _or predicate behavior to incorrectly be sensitive to where clause order in niche cases** Data › GraphQL API ## App Building and Packages ### New - **Added Application Graph to visualize application components and their relationships** User Interface › Application Designer - **Added a Share button to create a shareable Application Designer workspace link** User Interface › Application Designer ## Screens and User Experience ### New - **Implemented loading spinners and fixes for race conditions in select inputs** User Interface › Framework - **Implemented a variety of performance tweaks for web flows and mobile-oriented screens** User Interface › Framework - **Added support for Timeseries charts in Chart screen element** User Interface › Screen Designer - **Added an auto-refresh configuration option to Chart screen element** User Interface › Screen Designer ### Improved - **Converted web flow engine framework to TypeScript** User Interface › Framework ### Fixed - **Corrected a few scattered help links to point to the new knowledge base** User Interface › Framework ## Platform and Infrastructure ### Improved - **Updated services to use standardized MongoDB service map library** DevOps - **Unified service ENV for standardized handling and formatting** DevOps