Deep Dive
1. Granite Upgrade Testnet Pre-release (08 Jun 2026)
Overview: This is a pre-release version (v1.14.0-rc0) that updates the Flare and Songbird codebase to align with AvalancheGo's latest "Granite" upgrade, v1.14.0. It is currently only for the Coston and Coston2 testnets and cannot run the mainnet.
The update includes a significant increase in the minimum C-chain gas price (base fee floor) to 500 GWei. This change is being tested on the Coston network (from June 11) and Coston2 (from June 16) to assess its impact on network economics and fee burning before a potential mainnet rollout.
What this means: This is neutral for FLR in the short term as it's a testnet release. It is a critical step in preparing the network for a future mainnet upgrade that could make transactions more expensive but also significantly increase the amount of FLR burned from fees, creating stronger deflationary pressure if network activity grows.
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2. Avalanche 1.13.0 Mainnet Hard Fork (19 Mar 2026)
Overview: This was a mandatory mainnet upgrade (v1.13.0) that integrated improvements from the upstream Avalanche codebase. It included a breaking change for developers: the removal of the "StakeAmount" field from validator data, requiring the use of "weight" instead.
Node operators on the Flare mainnet were required to upgrade by April 14, 2026, to stay in consensus. The upgrade was first deployed on testnets in March before the mainnet activation.
What this means: This is bullish for FLR because it demonstrates active development and maintenance of the core protocol, ensuring the network remains secure, efficient, and up-to-date with broader ecosystem advancements. Successful upgrades like this improve long-term network health.
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3. Minor Backwards-Compatible Patch (24 Feb 2026)
Overview: This release (v1.12.1) was a minor, optional patch that maintained backwards compatibility with the previous v1.12.0 version. Such releases typically focus on fixing bugs, optimizing performance, or addressing minor security issues without introducing new features.
The team encouraged node operators to upgrade, highlighting a focus on network stability and reliability for all participants.
What this means: This is neutral for FLR, reflecting standard, ongoing maintenance. It contributes to a smoother and more reliable user experience by quietly improving the network's underlying infrastructure without disruptive changes.
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Conclusion
Flare's development pipeline shows a clear rhythm of rigorous testnet experimentation followed by disciplined mainnet upgrades, with consistent maintenance in between. The current focus is on testing major economic parameters like gas fees, which could fundamentally enhance FLR's tokenomics. How will the results from the Granite upgrade testnet influence the timing and scope of the next mainnet proposal?