It has a JH7110 onboard. From what I can tell, all of the vector processing is in dedicated hardware subsystems, not individual vector instructions.
We're still very early in the RISC V ecosystem, so most of the processors in production pre-date current standardizations, which requires applications to target specific silicon. To add insult to injury, those individual processors are relatively new, so the dedicated image processing and vector/tensor hardware doesn't have much support yet.
As per the article: "The biggest difference between the two boars is that the Orange Pi RV has a 1.5 GHz StarFive JH7110 quad-core processor, while the new Orange Pi RV2 has a an octa-core Ky X1 chip with a 2 TOPS AI accelerator."
The link you posted goes to the exact same board as in the article.
Yes, I'm currently using it to successfully test vector instructions. A blog post is being written, but may take a week or so.
Keep an eye on blog.habets.se, or ping me here on HN in about a week.