Hi Sirod,
The Akida family are all compatible with ARM's M85, but they are not part of M85. Thay are optional extras.
Helium is basically ARM in-house software for machine learning and digital signal processing.
https://www.arm.com/products/silicon-ip-cpu/cortex-m/cortex-m85
A
rm Cortex-M85 is the highest performing Cortex-M processor with Arm Helium technology and provides the natural upgrade path for Cortex-M based applications that require significantly higher performance and increased security.
Renesas has said that they will use their in-house DRP-AI for "heavy" AI loads, and Akida will be used for simple AI tasks. It would be surprising if Renesas were to produce the high performance M85 with only 2 nodes of Akida.
Brainchip has said that they are unable to say when the Renesas processor incorporating Akida will be produced. That is entirely within the control of Renesas.