Hi Cheng En Toh,
Thank you for reaching out to Microsoft Q&A forum and for your interest in Windows 12. I understand how important it is to plan ahead and to know when the next version of Windows will be available.
At the moment, Microsoft hasn’t announced an official release date for Windows 12. Windows 11 is currently the latest supported version and continues to receive regular feature and security updates. Please be cautious of any sites offering “Windows 12” downloads, as those aren’t official.
I highly recommend keeping your device up to date on Windows 11 and checking the Microsoft Software Download site and the official Windows Blog for any confirmed announcements.
Hope this clears things up for you.
Best regards.