docs: changelog

Author: lidel

docs/changelogs/v0.35.md

@@ -10,6 +10,7 @@ This release  was brought to you by the [Shipyard](http://ipshipyard.com/) team.
 
 - [Overview](#overview)
 - [🔦 Highlights](#-highlights)
+  - [Opt-in HTTP Retrieval client](#opt-in-http-retrieval-client)
   - [Dedicated `Reprovider.Strategy` for MFS](#dedicated-reproviderstrategy-for-mfs)
   - [Additional new configuration options](#additional-new-configuration-options)
   - [Grid view in WebUI](#grid-view-in-webui)
@@ -25,6 +26,19 @@ This release  was brought to you by the [Shipyard](http://ipshipyard.com/) team.
 
 ### 🔦 Highlights
 
+#### Opt-in HTTP Retrieval client
+
+This release introduces experimental client support for pure HTTPS block retrieval, supplementing existing Bitswap over Libp2p.
+
+The opt-in client allows Kubo to act on routing system provider results that have `/tls/http` multiaddrs, pointing to HTTPS servers supporting [Trustless HTTP Gateway](https://specs.ipfs.tech/http-gateways/trustless-gateway)'s Block Responses (`?format=raw`, `application/vnd.ipld.raw`). Fetching blocks over HTTPS (HTTP/2) can simplify infrastructure and lower costs for storage providers via HTTP caching and CDNs.
+
+To enable this feature for testing and feedback, set:
+```
+$ ipfs config --json HTTPRetrieval.Enabled true
+```
+
+See [`HTTPRetrieval`](https://github.com/ipfs/kubo/blob/master/docs/config.md#httpretrieval) for more details, and [IPIP-501](https://github.com/ipfs/specs/pull/501) for ongoing discussion how HTTP provider should announce support on Amino DHT (currently, HTTP results are effectively limited to IPNI results from delegated routing endpoint at `cid.contact`, or one specified via [`IPFS_HTTP_ROUTERS`](https://github.com/ipfs/kubo/blob/master/docs/environment-variables.md#ipfs_http_routers)).
+
 #### Dedicated `Reprovider.Strategy` for MFS
 
 The [Mutable File System (MFS)](https://docs.ipfs.tech/concepts/glossary/#mfs) in Kubo is a UnixFS filesystem managed with [`ipfs files`](https://docs.ipfs.tech/reference/kubo/cli/#ipfs-files) commands. It supports familiar file operations like cp and mv within a folder-tree structure, automatically updating a MerkleDAG and a "root CID" that reflects the current MFS state. Files in MFS are protected from garbage collection, offering a simpler alternative to `ipfs pin`. This makes it a popular choice for tools like [IPFS Desktop](https://docs.ipfs.tech/install/ipfs-desktop/) and the [WebUI](https://github.com/ipfs/ipfs-webui/#readme).