MUI Client Language Pack essentially adds additional complete language pack onto a Windows system. By default, all editions of Windows 10 are licensed to have one complete Client Language Pack to display the system’s UI. Additional Client Language Pack (MUI) required separate license. Select editions are also licensed to allow more than one language pack on the system at a time. These editions are known as multilingual editions. A multilingual edition enables users to change the UI language on a per-user basis. Since the UI language is associated with the user profile, multiple users that share the same system can use it in different languages.
Windows 10 MUI LP supports the following languages: Arabic, Bulgarian, Croatian, Czech, Danish, Dutch, English (UK), English (US), Estonian, Finnish, French, German, Greek, Hebrew, Hungarian, Italian, Japanese, Kazakh, Korean, Latvian, Lithuanian, Norwegian, Polish, Portuguese (Brazil), Portuguese (Portugal), Romanian, Russian, Serbian, Slovak, Slovenian, Spanish, Swedish, Thai, Turkish, Ukrainian, Traditional Chinese (Hong Kong SAR), Traditional Chinese (Taiwan), and Simplified Chinese.
On the other hand, Microsoft Windows Language Interface Pack (LIP) is a high-quality, localized “skin” for emerging or minority language markets. Based on MUI technology, LIP provides the desktop user with an approximately 80% localized user experience by translating a reduced set of user interface (UI) elements. LIP is installed on a licensed copy of Windows and has a dependency on a base Language Pack of Windows (for example, Catalan LIP can only be installed on top of Spanish or French LP, Welsh LIP can only be installed on top of English LP). Unlike MUI LP, LIP free, and is available for free download from Microsoft Download Center.
Here’s the information of the leaked ISO images.
32-bit (x86) Windows 10 RTM MUI LP (Language Packs)
File Name: : 10240.16384.150709-1700.TH1_CLIENTLANGPACKDVD1_OEMRET_X86FRE_MULTI.ISO
64-bit (x64) Windows 10 RTM MUI LP (Language Packs)
File Name: 10240.16384.150709-1700.TH1_CLIENTLANGPACKDVD1_OEM_X64FRE_MULTI.ISO
32-bit (x86) Windows 10 RTM LIP (Language Interface Packs)
File Name: 10240.16384.150709-1700.TH1_CLIENT_LIP_DVD_X86FRE_MULTI.ISO
64-bit (x64) Windows 10 RTM LIP (Language Interface Packs)
File Name: 10240.16384.150709-1700.TH1_CLIENT_LIP_DVD_X64FRE_MULTI.ISO
Also leaked is Windows 10 RTM OEM ISO images.