Is there anything on the roadmap for HDInsight this year (2025)?

I'm a bit concerned about the HDInsight roadmap.
I see that 4.0 and 5.0 are retiring as soon as March.

That will leave only one version remaining (v.5.1)

I noticed that Ubuntu 18.0.4 LTS (Bionic Beaver) reached end of LTS support over a year ago. That version of the OS is extremely outdated, and makes it appear as if v.5.1 is not properly maintained.

Can someone on the PG please share whether there is a plan for a new version? Will it be in 2025? Will it have a newer version of Spark?
Also how long will v.5.1 be supported?

Any information would be very much appreciated! Happy New Year.

PS. It was **very** discouraging when the AKS version of HDI was cancelled last year:
https://azure.microsoft.com/en-us/products/hdinsight-on-aks
... hopefully there is still a roadmap for HDI, even if AKS is not in the picture anymore.