December focused on polishing our current offerings, tightening wallet and explorer workflows, and keeping mainnet preparations on schedule. Below is a concise roundup and a few important reminders.

Mojito Wallet (Browser Extension)

Preparing for mainnet integrations with MintFun, RioSwap, and other dApps. Recent work includes:

• Bitcoin HD wallet updates, including multiple receive and change addresses
• New UTXO selection and fee calculation algorithm
• New Addresses page for easier address management
• Security hardening, performance improvements, and wallet API optimizations for both BTC and ML

Explorer

Ongoing bug fixes and refinement to improve token views and overall responsiveness.

MintFun

Continued bug fixing and UX refinement on testnet based on community feedback.

RioSwap

Ongoing work toward mainnet readiness. Backend integration is underway so Mojito can drive atomic swap flows directly in the browser and app.

Action for Node Operators

Upgrade to v1.2.0 before the mainnet hard fork scheduled for January 20–21, 2026.
Download Core Node: https://www.mintlayer.org/download

After the fork:

• Order fills and conclusions will require initial and current balances
• Pool decommissioning will require current staker balance data
• Token issuance may produce token IDs differently

Notes:

• Avoid creating order fills, pool decommissions, or token issuance near the fork height
• Simple transfers are not affected
• Full node and API server resync will occur after the upgrade
  Upgrade guide: Full Details

ERC-20 Migration Window

The ERC-20 to mainnet ML coin migration window closes on January 31, 2026. You can migrate via supported exchanges or the Mintlayer migration portal.

Migrate: https://token.mintlayer.org/migration
Wallet download: https://www.mintlayer.org/wallet
Step-by-step guide: ML Migration Guide  

In Case You Missed It: 2025 in Review Blog 

We moved from core infrastructure to shipping products and public testnets, advanced atomic swap readiness, launched the JavaScript SDK, refreshed Mojito, and brought ZK Thunder to testnet. RioSwap and MintFun testnets went live, and we introduced Mintlayer Web Services for builders and institutions.

Read the recap: Full 2025 Development Recap

Wrapping Up

December was about stability, refinements, and preparing the path to January’s hard fork. Reminder please update nodes to v1.2.0, complete ERC-20 migrations if needed, and keep testing MintFun and RioSwap on testnet.

You can follow progress on GitHub: https://github.com/mintlayer