Intel have made another round of microcode available.
Among other things this makes the new instructions available
on sandy bridge and ivy bridge:

+cpu_ucode_intel_apply: microcode updated cpu 0 rev 0x1c->0x1f (2072018)
 cpu0: Intel(R) Core(TM) i5-3360M CPU @ 2.80GHz, 2794.14 MHz
-cpu0: 
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,FSGSBASE,SMEP,ERMS,SENSOR,ARAT,MELTDOWN
+cpu0: 
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS-CPL,VMX,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,RDTSCP,LONG,LAHF,PERF,ITSC,FSGSBASE,SMEP,ERMS,IBRS,IBPB,STIBP,SENSOR,ARAT,MELTDOWN

https://newsroom.intel.com/wp-content/uploads/sites/11/2018/03/microcode-update-guidance.pdf
https://downloadcenter.intel.com/download/27591/Linux-Processor-Microcode-Data-File

== Updates upon 20171117 release ==
MODEL STEP f-mm-s:pf version
-- New Platforms --
BDX-DE EGW A0 6-56-5:10 e000009
SKX B1 6-55-3:97 1000140
-- Updates --
SNB D2 6-2a-7:12 29->2d
JKT C1 6-2d-6:6d 619->61c
JKT C2 6-2d-7:6d 710->713
IVB E2 6-3a-9:12 1c->1f
IVT C0 6-3e-4:ed 428->42c
IVT D1 6-3e-7:ed 70d->713
HSW Cx/Dx 6-3c-3:32 22->24
HSW-ULT Cx/Dx 6-45-1:72 20->23
CRW Cx 6-46-1:32 17->19
HSX C0 6-3f-2:6f 3a->3c
HSX-EX E0 6-3f-4:80 0f->11
BDW-U/Y E/F 6-3d-4:c0 25->2a
BDW-H E/G 6-47-1:22 17->1d
BDX-DE V0/V1 6-56-2:10 0f->15
BDW-DE V2 6-56-3:10 700000d->7000012
BDW-DE Y0 6-56-4:10 f00000a->f000011
SKL-U/Y D0 6-4e-3:c0 ba->c2
SKL R0 6-5e-3:36 ba->c2
KBL-U/Y H0 6-8e-9:c0 62->84
KBL B0 6-9e-9:2a 5e->84
CFL D0 6-8e-a:c0 70->84
CFL U0 6-9e-a:22 70->84
CFL B0 6-9e-b:02 72->84
SKX H0 6-55-4:b7 2000035->2000043

Index: Makefile
===================================================================
RCS file: /cvs/ports/sysutils/firmware/intel/Makefile,v
retrieving revision 1.4
diff -u -p -r1.4 Makefile
--- Makefile    23 Feb 2018 07:45:07 -0000      1.4
+++ Makefile    14 Mar 2018 05:31:39 -0000
@@ -2,10 +2,9 @@
 
 FW_DRIVER=     intel
 
-FW_VER=                20171117
+FW_VER=                20180312
 EPOCH=         0
-REVISION=      1
-MASTER_SITES=  https://downloadmirror.intel.com/27337/eng/
+MASTER_SITES=  https://downloadmirror.intel.com/27591/eng/
 
 DISTNAME=      microcode-${FW_VER}
 
Index: distinfo
===================================================================
RCS file: /cvs/ports/sysutils/firmware/intel/distinfo,v
retrieving revision 1.2
diff -u -p -r1.2 distinfo
--- distinfo    18 Jan 2018 23:15:10 -0000      1.2
+++ distinfo    14 Mar 2018 05:37:08 -0000
@@ -1,2 +1,2 @@
-SHA256 (firmware/microcode-20171117.tgz) = 
k70dqfpY7OABZwLmV/cIt+SW5W2mN6P+mm0h8db1JNw=
-SIZE (firmware/microcode-20171117.tgz) = 3594762
+SHA256 (firmware/microcode-20180312.tgz) = 
CzgfrOLfGwqCncT6j6k/R/OeEbHJwi69RPhhRlfB53k=
+SIZE (firmware/microcode-20180312.tgz) = 3789662
Index: pkg/PLIST
===================================================================
RCS file: /cvs/ports/sysutils/firmware/intel/pkg/PLIST,v
retrieving revision 1.3
diff -u -p -r1.3 PLIST
--- pkg/PLIST   23 Feb 2018 07:45:07 -0000      1.3
+++ pkg/PLIST   14 Mar 2018 05:37:28 -0000
@@ -60,10 +60,12 @@ firmware/intel/06-46-01
 firmware/intel/06-47-01
 firmware/intel/06-4e-03
 firmware/intel/06-4f-01
+firmware/intel/06-55-03
 firmware/intel/06-55-04
 firmware/intel/06-56-02
 firmware/intel/06-56-03
 firmware/intel/06-56-04
+firmware/intel/06-56-05
 firmware/intel/06-5c-09
 firmware/intel/06-5e-03
 firmware/intel/06-7a-01

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