In the issue title above add the document name followed by the date of this request, then the date of your proposed deadline for comments.

• name of spec to be reviewed: Vibration API

• URL of spec: https://w3c.github.io/vibration/

• Current Rec/Note phase? Recommendation (published under P2015)

• What and when is your next expected transition? Candidate Recommendation Snapshot (see "Other comments")

• What has changed since any previous review?

Please see the commit history for details and the changes section for an overview of the changes since the latest published version. Diff between the latest published version and the staged snapshot is available at htmldiff.

• Please point to the results of your self-review: Accessibility Checklist vibration#37
• Where and how to file issues arising? https://github.com/w3c/vibration/issues
• Pointer to any explainer for the spec?

This feature predates the explainer era, but its MDN entry serves as a good starting point.

Other comments:

Due to complexity of revising a Recommendation under the old process, TR for this specification did not receive these latest updates informed by implementation experience, but they were incorporated into the Editor's Draft instead. This caused some unfortunate confusion among readers not closely watching the specification. To clear this confusion, supported by reinvigorated interest and process improvements for revising a Recommendation, this API is now being revived on the Recommendation Track to allow bringing the updates from the ED back to TR and to allow for further improvements using the modern streamlined publication flow.

Thank you for your review!