Add 1.35 to the release schedule for 1.35 release

[Urvashi0109]

Description

This PR adds 1.35 to the releases schedule for the 1.35.0 release.

/milestone 1.35
cc: @dipesh-rawat @drewhagen @katcosgrove @kubernetes/release-managers

Issue

Closes: #

[netlify]

👷 Deploy Preview for kubernetes-io-vnext-staging processing.

Name	Link
🔨 Latest commit	7d1a67e
🔍 Latest deploy log	https://app.netlify.com/projects/kubernetes-io-vnext-staging/deploys/693cf3fd6fb6780008c48523

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by:
Once this PR has been reviewed and has the lgtm label, please assign reylejano for approval. For more information see the Code Review Process.

The full list of commands accepted by this bot can be found here.

Details

Needs approval from an approver in each of these files:

• data/releases/OWNERS

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[Copilot]

Pull request overview

This PR adds the release schedule for Kubernetes v1.35 to the release schedule YAML file. The new entry follows the established Kubernetes release cadence of approximately 4-month cycles, with v1.35 scheduled for release on December 17, 2025, following v1.34's August 27, 2025 release.

Key changes:

• Added v1.35 schedule entry with release date of 2025-12-17
• Configured maintenance mode to start on 2026-12-28 (approximately 12 months after release)
• Set end-of-life date to 2027-02-28 (2 months after maintenance mode begins)
• Defined initial patch release 1.35.1 with cherry pick deadline of 2026-01-02 and target date of 2026-01-07

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[netlify]

✅ Pull request preview available for checking

Built without sensitive environment variables

Name	Link
🔨 Latest commit	7d1a67e
🔍 Latest deploy log	https://app.netlify.com/projects/kubernetes-io-main-staging/deploys/693cf3fdda99ee0008e4b6eb
😎 Deploy Preview	https://deploy-preview-53588--kubernetes-io-main-staging.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify project configuration.