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The Editors and active contributors of Service Workers intend to publish
a Candidate Recommendation soon (details below). Consequently, this is a
Request for Comments by the WebApps group to seek wide review of the
latest version of the spec:
The open issues for Version 1, and the spec's version history are 
and , respectively.
If you have any comments, we prefer you submit them as Github issues
; otherwise, please send your comments to the public-webapps list 
using a Subject: prefix of "[serviceworkers]".
On 9/18/15 2:22 AM, Jungkee Song wrote:
We editors are happy to announce that we make a new branch for Service
Workers 1 today .
Thanks to all the contributions, Service Workers 1 now covers the
fundamental model and the associated APIs to support offline-first and
background processing requirements. The features in this version include:
- Register/Update/Unregister of a service worker registration
- Handle fetch events
- Fetch and Cache resources
- Manage service worker clients
- Communicate between a client and a service worker
- Define interfaces and algorithms for extensions (Push, Notification,
( is the remaining issues for this version in the github issue tracker.)
On top of the above work, the contributors are now ready to continue with
the discussions about new features including foreign fetch , fetch
event's request's client, header-based installation, kill-switch, and so
forth. These efforts will be put in Service Workers Nightly  which is
just a new name for the original ED branch.
We are planning to publish a CR based on Service Workers 1 soon during which
we would like to focus on stabilizing the features (bug fix) and resolving
compatibility issues among multiple implementations.