Note: (Make sure to read Note No. 5 & 6).

1. All Downloadable links (here is RTM/Final) are Magnets direct from Wzor (Available in 2nd line in each code), and all has a "Note: this is original M$ image. by WZT/WZor". To download the ISO, first Copy the magnet from the codes below and either paste it in browser or in utorrent (Add torrent from url).
2. Make sure what SKU you want to download (Example: Core/Pro or Enterprise) and check if that is listed here.
3. The Priority in this post is as follows, A. Localized ISO's which include I. Core/Pro , II. Enterprise and some other SKU's like CoreCountrySpecific or Single Language, III. Server editions, and B. Language Packs which include I. Windows 8.1 RTM, II. Server 2012 R2. and C. Windows 8.1 ADK & SDK_WDK Kit & Docs. D. Visual Studio 2013 RC. 
4. All ISO's (except Servers) are available in both architectures x86 as well as x64, on 1st place of every ISO its x86 and on 2nd its x64, Check them before you download.
5. Please Do not Request/PM me for New or 'Coming Soon' Language's that are not listed here, i'm just collecting here from Wzor, i'm not the leaker.
6. If your desired Language(s) ISO's are available from Wzor but i didn't list them, so wait for me to do it or PM me, maybe i was busy at that time when new things are available from Wzor.


Pro Tip: To get faster access to your required language, search from Content and click on required language.
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A. Localized ISO's

LanguageLanguage
Code
ISO's
EnglishEN-USWindows 8.1:
Core/Pro
Enterprise
Single Language

Server 2012 R2:
Standard & Datacenter
Essentials
Storage Server And Foundation
ServerHyperCore

Windows RT 8.1:
RT 8.1 with Office Coming Soon
GermanDE-DEWindows 8.1:
Core/Pro
Enterprise
RussianRU-RUWindows 8.1:
Core/Pro
Single Language

Server 2012 R2:
Standard & Datacenter

Windows RT 8.1:
RT 8.1 with Office Coming Soon
JapaneseJA-JPWindows 8.1:
Core/Pro
Enterprise
Chinese SimplifiedZH-CNWindows 8.1:
Core/Pro
Enterprise
Single Language
Core Country Specific
Chinese TraditionalZH-TWWindows 8.1: 
Core/Pro
Chinese HongKongZH-HKWindows 8.1:
Core/Pro
BulgarianBG-BGWindows 8.1: 
Core/Pro
UkrainianUK-UAWindows 8.1: 
Core/Pro
KoreanKO-KRWindows 8.1:
Core/Pro
Enterprise
SpanishES-ESWindows 8.1: 
Core/Pro
ItalianIT-ITWindows 8.1: 
Core/Pro
RomanianRO-ROWindows 8.1: 
Core/Pro
FrenchFR-FRWindows 8.1: 
Core/Pro
HebrewHE-ILWindows 8.1: 
Core/Pro
PortuguesePT-PTWindows 8.1: 
Core/Pro
ArabicAR-SAWindows 8.1: 
Core/Pro
CzechCS-CZWindows 8.1: 
Core/Pro Coming Soon
DanishDA-DKWindows 8.1: 
Core/Pro
GreekEL-GRWindows 8.1: 
Core/Pro
EnglishEN-GBWindows 8.1: 
Core/Pro Coming Soon
EstonianET-EEWindows 8.1: 
Core/Pro Coming Soon
FinnishFI-FIWindows 8.1: 
Core/Pro
CroatianHR-HRWindows 8.1: 
Core/Pro Coming Soon
HungarianHU-HUWindows 8.1: 
Core/Pro
LithuanianLT-LTWindows 8.1: 
Core/Pro Coming Soon
LatvianLT-LVWindows 8.1: 
Core/Pro Coming Soon
NorwegianNB-NOWindows 8.1: 
Core/Pro
DutchNL-NLWindows 8.1: 
Core/Pro
PolishPL-PLWindows 8.1: 
Core/Pro
PortuguesePT-BRWindows 8.1: 
Core/Pro
SlovakSK-SKWindows 8.1: 
Core/Pro Coming Soon
SlovenianSL-SIWindows 8.1: 
Core/Pro Coming Soon
SwedishSV-SEWindows 8.1: 
Core/Pro
ThaiTH-THWindows 8.1: 
Core/Pro Coming Soon
TurkishTR-TRWindows 8.1: 
Core/Pro Coming Soon
SerbianSR-LATN-RSWindows 8.1: 
Core/Pro Coming Soon

B. Language Packs



C. Windows 8.1 ADK & SDK_WDK Kit & Docs



D. Visual Studio 2013 RC Preview with Remote Tools