There is an easy way to try or test the daily build of Ubuntu Desktop Next 15.10. I am using my USB flash disk and create the Ubuntu Next 15.10 Live USB. It works pretty well and I am testing it onmy SONY VAIO laptop with touch screen. If you are running Windows, you can follow these tutorial to create Ubuntu Next 15.10 Live USB.
Things you need:
Steps to create Ubuntu Next 15.10 Live USB
Plug your flash disk and then open Image USB. Select the USB drive you want to use.
Browse to the ISO file you’ve downloaded. Press Write to start the process.