2015

• December 1, 2015 - Version-0.19.0
• November 9, 2015 - Typing Generators with Flow
• October 7, 2015 - Version-0.17.0
• September 22, 2015 - Version-0.16.0
• September 10, 2015 - Version-0.15.0
• July 29, 2015 - Version-0.14.0
• July 3, 2015 - Announcing Disjoint Unions
• March 12, 2015 - Announcing Bounded Polymorphism
• February 20, 2015 - Announcing Flow Comments
• February 18, 2015 - Announcing Import Type
• February 18, 2015 - Announcing Typecasts

2016

• October 13, 2016 - Introducing Flow-Typed
• October 4, 2016 - Property Variance and Other Upcoming Changes
• August 1, 2016 - Windows Support is Here!
• July 1, 2016 - New Implementation of Unions and Intersections
• February 2, 2016 - Version 0.21.0

2017

• September 3, 2017 - Typing Higher-Order Components in Recompose With Flow
• August 25, 2017 - Private Object Properties Using Flow’s Opaque Type Aliases
• August 16, 2017 - Even Better Support for React in Flow
• August 4, 2017 - Linting in Flow
• July 27, 2017 - Opaque Type Aliases
• May 7, 2017 - Strict Checking of Function Call Arity

2018

• December 13, 2018 - Supporting React.forwardRef and Beyond
• October 29, 2018 - Asking for Required Annotations
• October 18, 2018 - On the Roadmap: Exact Objects by Default
• March 16, 2018 - New Flow Errors on Unknown Property Access in Conditionals
• February 20, 2018 - Better Flow Error Messages for the JavaScript Ecosystem

2019

• October 30, 2019 - Spreads: Common Errors & Fixes
• October 25, 2019 - Live Flow errors in your IDE
• August 20, 2019 - Coming Soon: Changes to Object Spreads
• April 9, 2019 - Upgrading Flow Codebases
• February 8, 2019 - A More Responsive Flow
• January 28, 2019 - What the Flow Team Has Been Up To

2020

• December 1, 2020 - Types-First the only supported mode in Flow (Jan 2021)
• November 16, 2020 - Flow's Improved Handling of Generic Types
• May 18, 2020 - Types-First: A Scalable New Architecture for Flow
• March 16, 2020 - Making Flow error suppressions more specific
• March 9, 2020 - What we’re building in 2020
• February 19, 2020 - Improvements to Flow in 2019
• January 29, 2020 - How to upgrade to exact-by-default object type syntax

2021

• September 27, 2021 - Introducing: Local Type Inference for Flow
• September 13, 2021 - Introducing Flow Enums
• September 13, 2021 - TypeScript Enums vs. Flow Enums
• July 21, 2021 - Introducing Flow Indexed Access Types
• June 2, 2021 - Sound Typing for 'this' in Flow
• May 25, 2021 - Clarity on Flow's Direction and Open Source Engagement

2022

• October 20, 2022 - Improved handling of the empty object in Flow
• September 30, 2022 - Requiring More Annotations to Functions and Classes in Flow
• August 5, 2022 - New Flow Language Rule: Constrained Writes

2023

• September 19, 2023 - Improved Flow Docs and Try Flow
• August 17, 2023 - Announcing 5 new Flow tuple type features
• April 10, 2023 - Flow can now detect unused Promises
• March 15, 2023 - Announcing Partial & Required Flow utility types + catch annotations
• February 16, 2023 - Exact object types by default, by default
• January 17, 2023 - Local Type Inference for Flow

2024

• April 3, 2024 - New Flow Language Features for React
• March 5, 2024 - Announcing Conditional Types
• March 5, 2024 - Announcing User Defined Type Guards in Flow
• February 6, 2024 - New type casting syntax for Flow: 'as'