+ New `SHELL` Dockerfile instruction to specify the default shell when using the shell form for commands in a Dockerfile [#22489](https://github.com/docker/docker/pull/22489)
+ Add `#escape=` Dockerfile directive to support platform-specific parsing of file paths in Dockerfile [#22268](https://github.com/docker/docker/pull/22268)
+ Add support for comments in `.dockerignore` [#23111](https://github.com/docker/docker/pull/23111)
* Support for UTF-8 in Dockerfiles [#23372](https://github.com/docker/docker/pull/23372)
* Skip UTF-8 BOM bytes from `Dockerfile` and `.dockerignore` if exist [#23234](https://github.com/docker/docker/pull/23234)
* Windows: support for `ARG` to match Linux [#22508](https://github.com/docker/docker/pull/22508)
- Fix error message when building using a daemon with the bridge network disabled [#22932](https://github.com/docker/docker/pull/22932)
### Contrib
* Enable seccomp for Centos 7 and Oracle Linux 7 [#22344](https://github.com/docker/docker/pull/22344)
- Remove MountFlags in systemd unit to allow shared mount propagation [#22806](https://github.com/docker/docker/pull/22806)
### Distribution
+ Add `--max-concurrent-downloads` and `--max-concurrent-uploads` daemon flags useful for situations where network connections don't support multiple downloads/uploads [#22445](https://github.com/docker/docker/pull/22445)
* Registry operations now honor the `ALL_PROXY` environment variable [#22316](https://github.com/docker/docker/pull/22316)
* Provide more information to the user on `docker load` [#23377](https://github.com/docker/docker/pull/23377)
* Always save registry digest metadata about images pushed and pulled [#23996](https://github.com/docker/docker/pull/23996)
### Logging
+ Syslog logging driver now supports DGRAM sockets [#21613](https://github.com/docker/docker/pull/21613)
+ Add `--details` option to `docker logs` to also display log tags [#21889](https://github.com/docker/docker/pull/21889)
+ Enable syslog logger to have access to env and labels [#21724](https://github.com/docker/docker/pull/21724)
+ An additional syslog-format option `rfc5424micro` to allow microsecond resolution in syslog timestamp [#21844](https://github.com/docker/docker/pull/21844)
* Inherit the daemon log options when creating containers [#21153](https://github.com/docker/docker/pull/21153)
* Remove `docker/` prefix from log messages tag and replace it with `{{.DaemonName}}` so that users have the option of changing the prefix [#22384](https://github.com/docker/docker/pull/22384)
### Networking
+ Built-in Virtual-IP based internal and ingress load-balancing using IPVS [#23361](https://github.com/docker/docker/pull/23361)
+ Routing Mesh using ingress overlay network [#23361](https://github.com/docker/docker/pull/23361)
+ Secured multi-host overlay networking using encrypted control-plane and Data-plane [#23361](https://github.com/docker/docker/pull/23361)
+ MacVlan driver is out of experimental [#23524](https://github.com/docker/docker/pull/23524)
+ Add `driver` filter to `network ls` [#22319](https://github.com/docker/docker/pull/22319)
+ Adding `network` filter to `docker ps --filter` [#23300](https://github.com/docker/docker/pull/23300)
+ Add `--link-local-ip` flag to `create`, `run` and `network connect` to specify a container's link-local address [#23415](https://github.com/docker/docker/pull/23415)
+ Add network label filter support [#21495](https://github.com/docker/docker/pull/21495)
* Removed dependency on external KV-Store for Overlay networking in Swarm-Mode [#23361](https://github.com/docker/docker/pull/23361)
* Add container's short-id as default network alias [#21901](https://github.com/docker/docker/pull/21901)
* `run` options `--dns` and `--net=host` are no longer mutually exclusive [#22408](https://github.com/docker/docker/pull/22408)
- Fix DNS issue when renaming containers with generated names [#22716](https://github.com/docker/docker/pull/22716)
- Allow both `network inspect -f {{.Id}}` and `network inspect -f {{.ID}}` to address inconsistency with inspect output [#23226](https://github.com/docker/docker/pull/23226)