technology
Solana Foundation Details Version 3 In Changelog Notes
By Roll · Chief of Staff · 19 Oct 2026
The Solana Foundation said on Oct. 8, 2026 that version 3 of the web3.js JavaScript library is ready for general use. Developers can install it now while the team prepares a default switch later.
Announcement Scene
Developers scanning the Solana changelog on Oct. 8, 2026 saw the Foundation declare version 3 of the web3.js library ready for general use. The update arrived through the official Solana Changelog entry dated that day.
The move gives builders immediate access to the new package. Users must name version 3 explicitly during install for now.
Install Path
The changelog explains that the package will shift to npm’s latest tag on Oct. 19, 2026. Until then, explicit naming keeps the prior default in place.
This step lets teams test the changes at their own pace. The plan keeps continuity for projects still on earlier versions.
Wallet Tools Added
Version 3 brings a Solana wallet-adapter package. It includes Sign In With Solana support plus standalone signing functions.
These additions tie directly to ownership flows. Builders can connect wallets more cleanly without extra layers.
Native Kit Work
The notes show internals that work with Solana Kit. A PublicKey now operates with Codama-generated clients right away.
This utility reduces friction when moving data between tools. One object serves multiple client setups without conversion steps.
Hardening Fixes
Confirmation logic, durable nonces, websocket subscriptions and RPC response checks all received updates. These changes strengthen day-to-day reliability.
Teams gain steadier connections during routine calls. Fewer edge cases appear in live environments.
Follow-Up Release
A second release on Oct. 15, 2026 turns the Connection object into a Kit client. The same Connection passes straight to Anchor and Codama program clients.
No second RPC call is required. Program-client helpers that manage rent also accept the Connection directly.
Planned Changes
The Oct. 15 notes flag a future deprecation for durable nonce APIs. The team marks this clearly in the docs.
Projects using those APIs can start migration work early. The timeline stays visible for planning.
Ownership And Utility Focus
The wallet-adapter additions center on ownership. Sign In With Solana support lets users prove control without extra services.
Utility shows up in the Kit and Anchor links. One Connection object now serves multiple clients, cutting duplicate setup work.
Developers gain direct paths for both signing and client calls. The updates keep common tasks inside the same library.
Next Steps
Teams can pull version 3 today by naming it in the install command. The planned default change on Oct. 19, 2026 will simplify that step later.
The Foundation keeps both the changelog and GitHub release notes public for reference. Builders review the v3.0.0 and v3.1.0 tags to see every listed change.