WBT Industry Related Off Topic., page-228

Did a bit of digging into that 'SkyWater ReRAM 130nm PDK'

The whole folder was created in May 2020, and keep getting updated all the time to now.
There is a youtube video, i think was provided by Skywater (or somehow related to Skywater) for anyone to look at.

This video was shared online Aug 2021, just right before the deal announcement with WBT.
Then have a look the slide at 21:23,

Future support for adding ReRam towards the 130nm process. Interesting timing wasn't that?

My conclusion is that adding ReRam into 130nm process is not a recent idea from Skywater. That was way before the deal with WBT.
However, the ReRam cell they worked on before WBT stepped in, was not that great in terms of retension, endurance, speed etc,.
That is exactly why Skywater took the leap and took up WBT method, I think.
In this publically available PDK, I don't think the ReRam cell is the one they are qualifying using WBT method. I guess we won't see much of the detail until the qualification is done.