docs: document remaining 0.16.0 features

docs/changelogs/v0.16.md

@@ -12,6 +12,9 @@ Below is an outline of all that is in this release, so you get a sense of all th
     - [🔦 Highlights](#-highlights)
       - [🛣️ More configurable delegated routing system](#️-more-configurable-delegated-routing-system)
       - [🌍 WebTransport new experimental Transport](#-webtransport-new-experimental-transport)
+      - [🗃️ Hardened IPNS record verification](#-hardened-ipns-record-verification)
+      - [🌉 Web Gateways now support _redirects files](#-web-gateways-now-support-_redirects-files)
+      - [😻 Add files to MFS with ipfs add --to-files](#-add-files-to-mfs-with-ipfs-add---to-files)
     - [Changelog](#changelog)
     - [Contributors](#contributors)
 
@@ -117,6 +120,66 @@ Thoses steps are temporary and wont be needed once we make it enabled by default
    ```
 1. Restart your daemon to apply the config changes.
 
+### 🗃️ Hardened IPNS record verification
+
+Records that do not have a valid IPNS V2 signature, or exceed the max size
+limit, will no longer pass verification, and will be ignored by Kubo when
+resolving `/ipns/{libp2p-key}` content paths.
+
+Kubo continues publishing backward-compatible V1+V2 records that can be
+resolved by V1-only (go-ipfs <0.9.0) clients.
+
+More details can be found in _Backward Compatibility_, _Record Creation_, and
+_Record Verification_ sections of the [updated IPNS
+specification](https://github.com/ipfs/specs/pull/319/files).
+
+### 🌉 Web Gateways now support `_redirects` files
+
+This feature enables support for redirects, single-page applications (SPA),
+custom 404 pages, and moving to IPFS-backed website hosting
+[without breaking existing HTTP links](https://www.w3.org/Provider/Style/URI).
+
+It is limited to websites hosted in web contexts with unique
+[Origins](https://en.wikipedia.org/wiki/Same-origin_policy), such as
+[subdomain](https://docs.ipfs.tech/how-to/address-ipfs-on-web/#subdomain-gateway) and
+[DNSLink](https://docs.ipfs.tech/how-to/address-ipfs-on-web/#dnslink-gateway) gateways.
+Redirect logic is evaluated only if the requested path is not in the DAG.
+
+See more details and usage examples see
+[docs.ipfs.tech: _Redirects, custom 404s, and SPA support_](https://docs.ipfs.tech/how-to/websites-on-ipfs/redirects-and-custom-404s/).
+
+### 😻 Add files to MFS with `ipfs add --to-files`
+
+Users no longer need to  call `ipfs files cp` after `ipfs add` to create a
+reference in [MFS](https://docs.ipfs.tech/concepts/glossary/#mfs), or deal with
+low level pins if they do not wish to do so. It is now possible to pass MFS
+path in an optional `--to-files` to add data directly to MFS, without creating
+a low level pin.
+
+Before (Kubo <0.16.0):
+
+
+```console
+$ ipfs add cat.jpg
+QmCID
+$ ipfs files cp /ipfs/QmCID /mfs-cats/cat.jpg
+$ ipfs pin rm QmCID # removing low level pin, since MFS is protecting from gc
+```
+
+Kubo 0.16.0 collapses the above steps into one:
+
+```console
+$ ipfs add --pin=false cat.jpg --to-files /mfs-cats/
+```
+
+A recursive add to MFS works too (below line will create `/lots-of-cats/` directory in MFS):
+
+```console
+$ ipfs add -r ./lots-of-cats/ --to-files /
+```
+
+For more information, see `ipfs add --help` and `ipfs files --help`.
+
 ### Changelog
 
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