Highly unlikely. Microsoft has publicly stated that .NET Framework 4.8.1 is the final version. Future security updates will come via Windows Update, but no version 4.9 is planned.
: You should only download official installers directly from the Microsoft .NET Download page to avoid potential malware bundled with fake "version 4.9" installers. .NET Framework 4.9 Offline Installer for Windows
He restarted the climate software. The interface flickered to life, the .NET libraries finally providing the foundation the code needed to breathe. With a few frantic keystrokes, Elias forced the ventilation fans to 100%. A deep, rhythmic hum vibrated through the floorboards. The seeds were safe. Highly unlikely
Elias leaned back, staring at the installer file on the screen. In a world obsessed with the cloud, the most powerful tool he owned was the one that didn't need the sky to work. Should I help you find the technical specifications system requirements for a specific .NET version? : You should only download official installers directly
Before installing the .NET Framework 4.9 offline installer, ensure your system meets the following requirements: