Changes some missing references

Signed-off-by: Esteban Torres <me+github@estebantorr.es>

README.md

@@ -3,7 +3,7 @@
 # [Backstage](https://backstage.io)
 
 [![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)
-[![CNCF Status](https://img.shields.io/badge/cncf%20status-sandbox-blue.svg)](https://www.cncf.io/projects)
+[![CNCF Status](https://img.shields.io/badge/cncf%20status-incubation-blue.svg)](https://www.cncf.io/projects)
 [![Main CI Build](https://github.com/backstage/backstage/workflows/Main%20Master%20Build/badge.svg)](https://github.com/backstage/backstage/actions?query=workflow%3A%22Main+Master+Build%22)
 [![Discord](https://img.shields.io/discord/687207715902193673)](https://discord.gg/EBHEGzX)
 ![Code style](https://img.shields.io/badge/code_style-prettier-ff69b4.svg)
@@ -25,7 +25,7 @@ Out of the box, Backstage includes:
 - [Backstage TechDocs](https://backstage.io/docs/features/techdocs/techdocs-overview) for making it easy to create, maintain, find, and use technical documentation, using a "docs like code" approach
 - Plus, a growing ecosystem of [open source plugins](https://github.com/backstage/backstage/tree/master/plugins) that further expand Backstage’s customizability and functionality
 
-Backstage was created by Spotify but is now hosted by the [Cloud Native Computing Foundation (CNCF)](https://www.cncf.io) as a Sandbox level project. Read the announcement [here](https://backstage.io/blog/2020/09/23/backstage-cncf-sandbox).
+Backstage was created by Spotify but is now hosted by the [Cloud Native Computing Foundation (CNCF)](https://www.cncf.io) as an Incubation level project. Read the announcement [here](https://backstage.io/blog/2022/03/16/backstage-turns-two#out-of-the-sandbox-and-into-incubation).
 
 ## Project roadmap