Well there is a way to try it out without buying the new Samsung Galaxy Note 10 and Note 10 Plus and that is through the samsung developer android emulator simulator online on your PC.
It’s a fairly easy process to sign in with your samsung account or register with your gmail account directly just add a username and password and choose the mobile android platform, and that is it now you are full fledged android galaxy tester.
Here is a video below showing you all the step by step guidance in English.
https://developer.samsung.com/remotetestlab/galaxy/rtlDeviceList.action#