OSes/Windows/Phone 8.1

Build list

Build is available

Build is available but in a modified state

Build is partially available

Build is available as a remake

Build is confirmed to exist

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Status unknown (usually a placeholder label)

Developer Preview

Windows 8.1 codebase

12075.209.WPB_EXP_OFFICE.20130428-1100

Windows 10 codebase

12256.60.WPB_PARTNEROUT.20131211-2301

12298.77.WPB_PARTNEROUT.20140131-1346

12307.741.WPMAIN.20140206-1606

12354.836.WPMAIN.20140403-1509

Preview for Developers

12358.1191.WPB_DP_APPFN.20140417-2000

RTM

12397.895.WPMAIN.20140530-2215

Update 1

Beta

14116.127.WPB_CXE_R1.20140606-1607

Preview for Developers

14167.221.WPB_CXE_R1.20140825-0015