Update:

> Solid Silicon has had (semi-)public appearances recently:
> [...]
> IBM TechXchange:
> https://openpowerfoundation.org/events/ibmtechxchange24/
> https://reg.tools.ibm.com/flow/ibm/techxchange24/sessioncatalog/page/sessioncatalog?tab.sessioncatalogtabs=option_1601178495160&search=4158
> [...]
> I've yet to come across any OpenPOWER or Solid Silicon coverage,
> videos or slides from these events.

Some text and image coverage has emerged:

"OpenPOWER Foundation’s newest Platinum member, Solid Silicon, presented their latest developments and roadmap for the first truly self-sovereign open computing platform based on POWER architecture."
https://www.linkedin.com/posts/openpower-foundation_techxchange-ibmtechxchange-linux-activity-7256733371400175616-Yhou

"OpenPOWER Foundation team showcased Solid Silicon innovations using OpenPOWER cores, which are crucial to enhancing open-source flexibility and performance. These OpenPOWER cores contribute to a highly modular and powerful architecture, supporting AI workloads and advanced data processing needs with efficiency and interoperability."
https://www.linkedin.com/posts/solid-silicon_activity-7256671325396578304-Nado

"Solid silicon team presented their product features which will be available in a year from now. [...] With a solid roadmap and the promise of product features rolling out in the next year, it seems like there's significant momentum in expanding open-source hardware capabilities [...] Here’s a breakdown of what they plan to release or achieve: [...] Solid Silicon aims to introduce self-sovereign chips that give enterprises full ownership and control over their infrastructure. This approach involves releasing open-source chips with open firmware, tools, and keys, allowing organizations to maintain and secure their infrastructure independently. [...] OpenPOWER CPU cores built on the POWER ISA, which are more open and customizable than proprietary chips."
https://www.linkedin.com/pulse/exploring-innovations-ibm-techxchange-2024-ganesan-narayanasamy-gkhhc