Looking for a Windows 8 Release Preview Product Key , Trial Key or (Serial Keys) ? Then your search ends here !
Microsoft released Windows 8 Release Preview, its new operating system.If you have downloaded Windows 8 Release Preview (RP) ISO and if you are in the process to install it from USB or a bootable CD , you would have been asked for a product key.
UPDATE : As windows has blocked all the release preview keys.You cannot use them anymore.So to use windows 8 its best to download and use Windows 8 Pro or we can use the windows 8 90 days trail instead of windows 8

What ‘s Windows 8 Release Preview Product Key and why we need it ?
TK8TP-9JN6P-7X7WW-RFFTV-B7QPF
MBFBV-W3DP2-2MVKN-PJCQD-KKTF7
Windows 8 Professional Edition Key :XKY4K-2NRWR-8F6P2-448RF-CRYQH
Windows 8 Release Preview Key:TK8TP-9JN6P-7X7WW-RFFTV-B7QPF
Windows 8 Consumer Preview Key:DNJXJ-7XBW8-2378T-X22TX-BKG7J
Windows 8 Developers Preview Product key:6RH4V-HNTWC-JQKG8-RFR3R-36498
Windows Server 8 Developers Version Key:4Y8N3-H7MMW-C76VJ-YD3XV-MBDKV
6RH4V-HNTWC-JQKG8-RFR3R-36498
4Y8N3-H7MMW-C76VJ-YD3XV-MBDKV
MBFBV-W3DP2-2MVKN-PJCQD-KKTF7
28VNV-HF42G-K2WM9-JXRJQ-2WBQW
NF32V-Q9P3W-7DR7Y-JGWRW-JFCK8
English: DNJXJ-7XBW8-2378T-X22TX-BKG7J
Chienese: DNJXJ-7XBW8-2378T-X22TX-BKG7J
French: DNJXJ-7XBW8-2378T-X22TX-BKG7J
German: DNJXJ-7XBW8-2378T-X22TX-BKG7J
Japanese: DNJXJ-7XBW8-2378T-X22TX-BKG7J
Hope these windows 8 keys were helpful.Do comment if you need any help.