Announcing AIP unified labeling client maintenance mode and sunset of mobile viewer

Hen David We were also in the proces to include DKE for some specific and highly confidential (GDPR) content.

Missing a clear direction makes it extremely hard to invest, specifically and because we use the guiding principle to not start/ invest in the deployment of software/ components that are already in 'maintenance'.

We are at the turning point and need clarification/ guidance/ directions within the next month, specifically, because we assumed DKE is soon supported by the build-in Office clients, based on the following two articles: 

Through the Microsoft Purview documentation, we get mixed signals and need clarification on the 2 articles'

1. The article https://docs.microsoft.com/en-us/microsoft-365/compliance/sensitivity-labels-aip?view=o365-worldwide#feature-parity-for-built-in-labeling-and-the-aip-add-in-for-office-apps
   
   It states; 'Double key encryption' 'In planning or development'. AllAIP add-in feature or capability that have this Built-in labeling description have a Microsoft 365 Roadmap planning, not DKE.
   
   Question; Please clarify, is it under 'review' or 'in planning or development'? In the latter case, why is it not on the Microsoft 365 Roadmap?
   
   
2. The article https://docs.microsoft.com/en-us/microsoft-365/compliance/double-key-encryption?view=o365-worldwide
   Almost at the end of this article it states: 
   
   Enable DKE in your client
   If you're an Office Insider, DKE is enabled for you. Otherwise, enable DKE for your client by adding the following registry keys:
   
   [HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\MSIPC\flighting]
   "DoubleKeyProtection"=dword:00000001
   [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MSIPC\flighting]
   "DoubleKeyProtection"=dword:00000001
   
   Question; Please clarif, is DKE already part of the Office Insider 'build-in client' or does this refer to something completely different?