Migration status, prepare for archival

Author: jhchabran

Diff for: README.md

@@ -6,25 +6,20 @@ The handbook is a living document and we expect every teammate to propose improv
 
 All content is in [Markdown](https://www.markdownguide.org/getting-started/#what-is-markdown) files under the [📁 content](./content) folder.
 
-## :warning: Ongoing migration to Notion.so
+## :warning: Migration to Notion.so
 
-We are in the process of moving the handbook over Notion.so. In the original spirit of the handbook, we want most pages to stay publicly accessible.
+The handbook is hosted on Notion, and https://handbook.sourcegraph.com will redirect to the corresponding Notion.site.
+Redirections listed in `data/notion_migration.yaml` are now handled through Cloudflare.
 
-- If you intend to contribute to the handbook, please instead do so on the Notion corresponding page, or port it if that's not yet done.
-- If you maintain a set of pages, please take some time to add the corresponding redirection to the Notion equivalent in [data/notion_migration.yaml].
+Please reach-out to [#wg-notion](https://sourcegraph.slack.com/archives/C06T68DBMSA) to add a new one if:
 
-### Plan
+- It's a very important page that was relevant to customers.
+- It's a very important page for the hiring process and emails are in-flight with those URLs.
 
-- [x] Set up basic Notion structure
-- [x] Port the most important pages
-- [] Port the remaining content
-- Populate redirections for important pages to their Notion equivalent.
-- May 1st: pull request for content change are subject to strict review.
-  - Only necessary changes are allowed.
-- May 15th: content changes are forbidden, only redirections are accepted.
-- May 31th: repository is archived.
-- `handbook.sourcegraph.com` is now serving Notion pages.
-  - Previously set redirections are ported from the application to Cloudflare page rules.
+Please reach-out to [#discuss-dev-infra](https://sourcegraph.slack.com/archives/C04MYFW01NV) directly if:
+
+- You need to scrub content from the handbook (incorrect content has been added before the repo was archived).
+- You absolutely need to push some change, with a very valid reason for it.
 
 ### Need help editing?