docs(changelog): v0.14 rename and breaking changes

docs/changelogs/v0.14.md

@@ -6,8 +6,21 @@
 
 Below is an outline of all that is in this release, so you get a sense of all that's included.
 
-- [🔦 Highlights](#---highlights)
-  * [🛣️ Delegated Routing](#---Delegated-Routing)
+- [🛠 BREAKING CHANGES](#-breaking-changes)
+  - [Removed `mdns_legacy` implementation](#removed-mdns_legacy-implementation)
+- [🔦 Highlights](#-highlights)
+  - [🛣️ Delegated Routing](#-delegated-routing)
+  - [👥 Rename to Kubo](#-rename-to-kubo)
+
+### 🛠 BREAKING CHANGES
+
+#### Removed `mdns_legacy` implementation
+
+The modern DNS-SD compatible [zeroconf implementation](https://github.com/libp2p/zeroconf#readme)
+(based on [this specification](https://github.com/libp2p/specs/blob/master/discovery/mdns.md))
+has been running next to the `mdns_legacy` for a while (since v0.11). During
+this transitional period Kubo nodes were sending twice as many LAN packets,
+which ends with this release: we've [removed](https://github.com/ipfs/kubo/pull/9048) the legacy implementation.
 
 ### 🔦 Highlights
 
@@ -29,3 +42,18 @@ ipfs config Routing.Routers.CidContact --json '{
 }'
 
 ```
+
+#### 👥 Rename to Kubo
+
+We've renamed Go-IPFS to Kubo ([details](https://github.com/ipfs/go-ipfs/issues/8959)).
+
+Published artifacts use `kubo` now, and are available at:
+
+- https://dist.ipfs.io/kubo/
+- https://hub.docker.com/r/ipfs/kubo/
+
+To minimize the impact on infrastructure that autoupdates on a new release,
+the same binaries are still published under the old name at:
+
+- https://dist.ipfs.io/go-ipfs/
+- https://hub.docker.com/r/ipfs/go-ipfs/