32-bit RTM Sources:
en_windows_8_1_x86_dvd_2707392.iso
en_windows_8_1_n_x86_dvd_2707895.iso
en_windows_8_1_pro_vl_x86_dvd_2791634.iso
en_windows_8_1_pro_n_vl_x86_dvd_2791509.iso
en_windows_8_1_enterprise_x86_dvd_2791510.iso
en_windows_8_1_enterprise_n_x86_dvd_2791297.iso
9600.16384.130821-1623_x86fre_Client_SingleLanguage_EN-US-IRM_CSLA_DV5.ISO

64-bit RTM Sources:
en_windows_8_1_x64_dvd_2707217.iso
en_windows_8_1_n_x64_dvd_2707896.iso
en_windows_8_1_pro_vl_x64_dvd_2791292.iso
en_windows_8_1_pro_n_vl_x64_dvd_2791264.iso
en_windows_8_1_enterprise_x64_dvd_2791088.iso
en_windows_8_1_enterprise_n_x64_dvd_2791038.iso
9600.16384.130821-1623_x64fre_Client_SingleLanguage_EN-US-IRM_CSLA_DV5.ISO


These RTM Sources are the final Build 9600

Installation Indexes:
Windows 8.1 (Core) S2014 / KMS-Activated
Windows 8.1 (Core) N S2014 / KMS-Activated
Windows 8.1 (Core) Single Language S2014 / KMS-Activated
Windows 8.1 Pro S2014 / KMS-Activated
Windows 8.1 Pro N S2014 / KMS-Activated
Windows 8.1 Pro VL S2014 / KMS-Activated
Windows 8.1 Pro N VL S2014 / KMS-Activated
Windows 8.1 Pro WMC S2014 / KMS-Activated
Windows 8.1 Enterprise S2014 / KMS-Activated
Windows 8.1 Enterprise N S2014 / KMS-Activated

Release File: Win81AIO-S14-20in1-x86-en-US-Mar2014.iso
Size: 3.0 GiB
SHA-1: 78C747443850D75899388EA21B861D4BCE855FA4

Language: en-US (English - United States)

Tools used:
imagex for /flags "ProfessionalWMC" setting and index renames
dism for set-edition for ProWMC, KB integration, ESD export
oscdimg for ISO mastering with UDF -u1 option
Microsoft Diagnostics and Recovery Toolset (DaRT) 8.1
Info folder added to Windows/Setup dir to annoy credit thieves.

Prep KBfiles:
KB2919442, KB2939087

Spring 2014 Featurepack KBfiles:
KB2919355, KB2932046, KB2937592, KB2938439

Newer KB file integration:
KB2894853, KB2899189, KB2928680, KB2938527

Features:
-Windows 8.1 Spring 2014 update 17031 build
-ESD recovery compression format for reduced iso size.
-DaRT 8.1 integrated into boot.wim and winre.wim recovery options.
Choose Repair your computer, Troubleshoot, then MS DaRT options to open.
Features include an offline defender a/v scanner, password reset tool,
registry editor, offline hotfix removal, system file checker, and many more.
For WinRE.wim DaRT 8.1 you need to restart the Windows Recovery by running
"shutdown /r /o /t 0" and then choosing the Advanced boot options. When
the boot menu comes up choose option 10 and then Troubleshoot, DaRT.

Notes:
-All indexes use original MSDN 9/9 Win8.1 isos with integrated hotfixes.
-Ei.cfg is included so you will need to extract iso to a directory and
delete the file if you want to run the Upgrade setup from Previous OS.
-You will not want to install this if you change you language until we have
the post-S2014 language packs leaked or MS updates the files on their
servers. Changing language using the pre-leaked langages available on
WinUpdate or the previous language packs will give you old file versions
and cause boot failure and other equally serious problems. Make sure the
files are available before you change your language.
-When upgrading from 8.0, you need to let Setup download updates. If you
do not allow setup to download updates, you will get a system full of
errors and malformed files. Install using default key or gVLK
(see win81-pkeys.txt) and then change key afterward if desired using slmgr.

Credits:
CODYQX4, mikmik38, and nosferati87 - CODYQX4's AutoKMS activator
murphy78 - Testing, Integration and ISO design