Windows 10 will feature an improved start menu with transparency, new icons, and more. While not a significant change, it's just subtle enough to be a nice, modern improvement.
If you don't have Windows 10 Build 2004 with KB4568831 update, you can enable it by editing the registry. Usually, we'd add this to MajorGeeks Windows Tweaks, but eventually, the new Start Menu will be available to all.
Copy and paste Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\FeatureManagement\Overrides\ into the address bar and make the following additions or changes:
Right-click on overrides and click on New > Key. Name it 0.
Right-click on 0 and click on New > Key. Name it 2093230218.
Right-click on 2093230218 and click on New > DWORD (32-bit) Value. Name it EnabledState with a Value Data of 2.
Right-click on 2093230218 and click on New > DWORD (32-bit) Value. Name it EnabledStateOptions with a Value Data of 0, which should be the default.
Reboot. If it didn't work, we suggest creating a registry file, as explained above. It's much simpler.
3: Disable New Windows 10 2004 Start Menu
Go back to Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\FeatureManagement\Overrides and delete the 0 key.