If you are doing a new clean install you will need to type in the right product keys.
Clean install can be done when the ISO file is available later (when the build hits slow ring), or when you create your own ISO with this guide from the ESD file
- Windows 10 Insider Preview Home Editions: KTNPV-KTRK4-3RRR8-39X6W-W44T3
- Windows 10 Insider Preview Pro Editions: 8N67H-M3CY9-QT7C4-2TR7M-TXYCV
- Windows 10 Insider Preview Enterprise Editions: CKFK9-QNGF2-D34FM-99QX2-8XC4K