# Kaia v2.2 Overview — Ethereum compatibility work planned for 2026 (v2.2.0, late Jan testnet)

**URL:** <https://devforum.kaia.io/t/kaia-v2-2-overview-ethereum-compatibility-work-planned-for-2026-v2-2-0-late-jan-testnet/9062>\
**Category:** Kaia\
**Created:** [1월 22, 2026, 8:01오전 UTC](https://devforum.kaia.io/t/kaia-v2-2-overview-ethereum-compatibility-work-planned-for-2026-v2-2-0-late-jan-testnet/9062 "2026-01-22T08:01:29Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![sean.lin](https://yyz1.discourse-cdn.com/flex035/user_avatar/devforum.kaia.io/sean.lin/32/3173_2.png) [@sean.lin](https://devforum.kaia.io/u/sean.lin)\
**Post date:** [1월 22, 2026, 8:01오전 UTC](https://devforum.kaia.io/t/kaia-v2-2-overview-ethereum-compatibility-work-planned-for-2026-v2-2-0-late-jan-testnet/9062/1 "2026-01-22T08:01:29Z")

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![20260121_Kaia 2.2 Overview (EN)](https://canada1.discourse-cdn.com/flex035/uploads/klaytn/original/2X/1/151de0fff3a51fcb7399acec3a9c05b39c233e09.jpeg)

**TL;DR**  
Kaia v2.2 is a compatibility + infra upgrade planned for early 2026. It focuses on:

1. **Blob transactions (EIP-4844)** for data availability foundations,
2. **secp256r1 precompile (EIP-7951)** for passkey/WebAuthn-style UX groundwork, and
3. **tooling parity** improvements (eth\_config + ModExp gas alignment + smaller EVM parity fixes).

Article: [https://blog.kaia.io/kaia-v2-2-overview-en/](https://blog.kaia.io/kaia-v2-2-overview-en/)

### Release plan

- **Testnet:** targeted for **late January 2026**
- **Mainnet:** targeted for **late February 2026**

### What’s in v2.2

**1) Data availability foundation (BlobTx / EIP-4844)**

- Adds support for blob transactions as a foundation for data-heavy architectures (including L2/rollup-style systems).
- Uses sidecar handling via JSON-RPC (not Ethereum’s Beacon API framework), per the overview.

**2) Account abstraction enablement (passkey groundwork)**

- Adds a **secp256r1 precompile** to support more efficient verification for passkey/WebAuthn-style flows and smart account patterns.

**3) Developer tooling parity**

- Adds **eth\_config** for better hard fork coordination across tooling/operators.
- Aligns **ModExp gas behavior** (and includes smaller EVM parity changes).

### What’s _not_ in v2.2

- **No consensus changes** in v2.2
- **No permissionless validator change** in v2.2  
(Compatibility work is scoped separately from broader redesign efforts.)

### Questions welcome

If you’re planning around v2.2, reply with:

- what you build (app/wallet/infra /L2/rollup tooling)
- what you’re worried about (RPC surface, signing/account model, blob plumbing, fork coordination)
- any “must-have” parity gaps you’re tracking

We’ll consolidate the common themes and reply in-thread.

---

<div class="post-metadata">

**Author:** ![sean.lin](https://yyz1.discourse-cdn.com/flex035/user_avatar/devforum.kaia.io/sean.lin/32/3173_2.png) [@sean.lin](https://devforum.kaia.io/u/sean.lin)\
**Post date:** [1월 26, 2026, 8:00오전 UTC](https://devforum.kaia.io/t/kaia-v2-2-overview-ethereum-compatibility-work-planned-for-2026-v2-2-0-late-jan-testnet/9062/2 "2026-01-26T08:00:01Z")

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![Jan 22 v2.2 overview](https://canada1.discourse-cdn.com/flex035/uploads/klaytn/original/2X/5/544a4da5c5eca719b54e24120ebd1c571579881d.png)

Concrete scenario: you’re planning around **v2.2** as a wallet/app/infra team and want to know what to start testing first (blobs, passkeys, or tooling parity), without waiting for mainnet.

Things to think about:

- For **BlobTx** testing: treat blobs as “new plumbing” in your tx + RPC path (and remember sidecars are served via **JSON-RPC** , not a Beacon API flow).
- For **passkey/WebAuthn groundwork** : map where a secp256r1-friendly verification path changes your signing/account UX assumptions (especially onboarding + recovery flows).
- For **tooling parity** : plan how you’ll use **eth\_config** for fork checks across clients/services, and don’t leave this to the last minute if you run infra.

Targets: **testnet early Feb 2026** , **mainnet late Feb 2026**. No consensus changes in v2.2.

Full overview: [Kaia v2.2 Overview](https://blog.kaia.io/kaia-v2-2-overview-en/)  
If you’re planning for v2.2, reply with what you build (app/wallet/infra /L2 tooling) + which area you care about most (blobs/passkeys/fork coordination), and we’ll reply in-thread.