Update documentation for Conan Center remote (#25866)

* Update documentation for remote

README.md

@@ -14,26 +14,37 @@ The current Conan Center Index CI status can be found on https://status.conan.io
 Any maintenance, outage or important event related to the CI will be informed there.
 
 
-### Add ConanCenter remote
+### Configure the Conan Center remote
 
-ConanCenter remote is configured by default in any Conan client installation. If, for any reason, you need to add it manually, just execute:
+> [!IMPORTANT]  
+> The Conan Center remote URL changed for **Conan 2** on November 2024 - the new URL is the default on new installations of Conan since version 2.9.2.
+>
+> New recipe updates are only published to this remote and are only guaranteed to be compatible with recent versions of Conan 2.
+>
+> All previously published recipes and packages known to be compatible with Conan 2 are also served by this remote.
+
+To update an existing Conan 2 installation:
 
 ```
-conan remote add conancenter https://center.conan.io
+conan remote update conancenter --url https://center2.conan.io
 ```
 
+#### Conan Center legacy remote
+
+The legacy remote at `https://center.conan.io` stopped receiving updates on 4 November 2024 and is frozen and will no longer received updates.
+It is kept in this state to avoid breaking any existing Conan 1.x installations.
+
+
 ### How to consume recipes
 
 Starting to use recipes from this repository is as easy as running
 one simple command after installing Conan:
 
 ```
-conan install name/version@ [-g <generator>]
+conan install --require=name/version [-g <generator>]
 ```
 
-Of course, we really encourage you to use a `conanfile.txt` or `conanfile.py`
-to list all the requirements or your project and install them all together
-(Conan will build a single graph and ensure congruency).
+For further details, please see the [Conan documentation](https://docs.conan.io/2/tutorial/consuming_packages.html).
 
 :warning: It is very important to notice that recipes will evolve over time
 and, while they are fixing some issues, they might introduce new features and