Yes, the article mentions that its siblings includes RocksDB. There are already outsized (north of 5TB) embedded databases geared towards high-IOPS storage (ie: NVMe) and this project serves to establish C#/.NET Core as a platform to build similarly-specced analytics products.

I think you are spot on; this is an MS Research Blog post and not a product announcement. The most interesting thing in the post IMHO is the link to the paper. The Tango paper is another good read.