September.4 to September 26, the following hotfix KB articles were released for Windows 8.1 Preview:

  • 2880312 Update improves Windows 8.1 upgrade experience
  • 2881553 Update for the English Input Personalization Dictionary for Windows 8.1
  • 2880582 Update for Japanese IME dictionaries in Windows 8.1
  • 2880581 Update for Korean IME prediction dictionary in Windows 8.1