Wow that was fast! 
I did search but couldn’t find any post that gives information about the release timeline.
This first link you provided results in an “Oops! That page doesn’t exist or is private.”
The second link only provides guidance to test plasma 6 from an unstable branch. This post is from November 2023 so I thought it was just a post to help people test the plasma beta releases. It does not provide any information about a timeline, the current status,…
I thought that maybe because today’s the big 6.0 stable release that maybe there would be an update available soon. 
I couldn’t find any information about this therefore I created this post.