https://www.cnet.com/news/microsoft-surface-family-rumored-specs-features-leaks-price-and-possible-oct-2-release/

Microsoft has an uneven track record when it comes to the Surface line, varying between periods of radical experimentation (e.g., the original Surface Pro, the Surface Studio PC) and modest, incremental upgrades (e.g., the 2017 Surface Pro). The company has often said it uses the Surface portfolio to explore new product categories, rather than stoke competition with partners like Acer and Lenovo in existing categories. But that doesn't always bear out in practice (Exhibit A: the Surface Laptop -- a very fine though wholly undifferentiated 13-inch laptop).

Still, there are several 2017-era products in the lineup, including the Surface Laptop and Surface Pro, that are due for an update. And then there's also a handful of mysterious code-named Microsoft products -- like the rumored dual-screen Andromeda device -- that could always show up.