The business-centric Vostro laptops offer single-sign on fingerprint reader, TPM 2.0, and a wide range of Dell Pro Support protection options. The new laptops themselves borrow the narrow-bezel design features of the XPS 13 and 15 lineup to better appeal to on-the-go business users.
https://www.notebookcheck.net/Dell-Vostro-13-5390-and-Vostro-15-7590-now-available-sporting-thinner-form-factors-and-MX250-or-GTX-1650-graphics.419756.0.html
I don't understand why Dell doesn't use i3 and Nvidia dGPU on Latitudes, or why they're not on high-end Thinkpads and EliteBooks.
Who's going to buy a Vostro? The public doesn't know Vostro, and the enthusiasts who know it are already familiar with their poor quality.