It's more than just a simple Ice Lake update that everyone was expecting. The refreshed Blade Stealth will launch in September-October to be Razer's first ever Stealth laptop equipped with GeForce GTX graphics. The jump from GeForce MX150 to the GTX 1650 should offer a massive ~150 percent increase in graphics horsepower albeit likely with shorter battery life in the process.
https://www.notebookcheck.net/New-Razer-Blade-Stealth-to-offer-the-biggest-leap-in-graphics-for-the-series-ever-will-come-with-Ice-Lake-Core-i7-and-GeForce-GTX-1650-Max-Q-graphics.432498.0.html