Windows 8.1 8in1 x64 en-US Final March 2015

No Windows 8.1 Settings were harmed in the making of this ISO.
No Programs are added to Windows.
No Registry Settings were modified.
No Unattended Settings were added to the ISO.

64-bit Sources:
9600.17053.winblue_refresh.141120-0031_x64fre_client_coresinglelanguage_en-us-ir5_csla_x64frer_en-us_esd_e917848838d7d8111c93dd7b1d78ae8d047b9bcf.esd
en_windows_8.1_n_with_update_x64_dvd_6051677.iso
en_windows_8.1_enterprise_with_update_x64_dvd_6054382.iso
en_windows_8.1_enterprise_n_with_update_x64_dvd_6050225.iso

Installation Indexes:
Windows 8.1 (Core)
Windows 8.1 (Core) N
Windows 8.1 (Core) Single Language
Windows 8.1 Pro
Windows 8.1 Pro N
Windows 8.1 Pro with Media Center
Windows 8.1 Enterprise
Windows 8.1 Enterprise N

Release File: Win81-x64-en-US-Mar2015.iso
Size: 6.07 GB
SHA-1: 429161ED90416C82BB4B9B1E1E2DBD430AD8A06D

Language: en-US (English - United States)

Pre-integration Image (Permanent Updates):
KB2899189, KB2976536, KB2977765, KB2978041, KB2978126, KB2979576,
KB2989930, KB2990967, KB2994290, KB2998174, KB3002885, KB3004361,
KB3004365, KB3004394, KB3006137, KB3008242, KB3008923, KB3011780,
KB3012235-v3, KB3012702, KB3013126, KB3013172, KB3013410, KB3013455-v2,
KB3016074, KB3018133, KB3019215, KB3019868, KB3019978, KB3020338,
KB3021674, KB3021953, KB3022777, KB3022796, KB3023266, KB3023562,
KB3024663, KB3024751, KB3024755, KB3025390, KB3025417, KB3027209,
KB3029606, KB3029803, KB3029944, KB3030377, KB3030947, KB3031044,
KB3031432, KB3032323, KB3032359, KB3033889, KB3034196, KB3034344,
KB3034348, KB3035017, KB3035126, KB3035131, KB3035132, KB3035527,
KB3035553, KB3036228, KB3036562, KB3036612, KB3039066, KB3040335,
KB3044132, KB3046049, KB2955164, KB2965500, KB2962409, KB2975719,
KB2979582, KB2990532, KB2993100, KB2993651, KB2977174, KB2984006,
KB2994897, KB2995004, KB2995518, KB2995388, KB2996799-v2, KB3003667,
KB2934520, KB2962806, KB3012199

2nd-integration (Monthly Pending Updates):
KB3013769, KB3013816, KB2959977, KB2980654, KB2894852-v2, KB2966826,
KB2966828, KB2968296, KB2972103-v2, KB2972213, KB2973114, KB2978122,
KB2979573, KB3013769, KB3013816, KB3021952, KB3023607, KB3036197,
KB2973351, KB2973201

Tools used:
dism for Image Exports
oscdimg for ISO mastering