intel mpss 3.8.3 meta-mpss

The meta-mpss Yocto layer archives in the mpss-src tar files appear to be empty for releases of MPSS 3.7 and 3.8. The last working meta-mpss .tar.bz2 I can find was in the MPSS 3.6.1 release. I'm trying to make some modifications to BitBake recipes (using https://software.intel.com/en-us/forums/intel-many-integrated-core/topic/509077) and I'm cobbling together the MPSS 3.8.3 sources along with the 3.6.1 meta-mpss Yocto layers just to get something to even start building.

Is this by design? Can MPSS 3.8.x meta-mpss Yocto layer sources be distributed? Thanks for any guidance.

tmp:$ for i in /opt/intel/xeon/phi/dl/3.*/mpss-src-3.*.tar ; do tar -tvf $i | grep meta-mpss ; done | sort -n -k3
-rw-rw-r-- qb_user/qb_user       14 2016-03-25 05:23 mpss-3.7/src/meta-mpss-3.7.tar.bz2
-rw-rw-r-- qb_user/qb_user       14 2016-05-24 05:21 mpss-3.7.1/src/meta-mpss-3.7.1.tar.bz2
-rw-rw-r-- qb_user/qb_user       14 2016-08-09 14:10 mpss-3.7.2/src/meta-mpss-3.7.2.tar.bz2
-rw-rw-r-- qb_user/qb_user      14 2016-11-22 10:24 mpss-3.8/src/meta-mpss-3.8.tar.bz2
-rw-rw-r-- qb_user/qb_user       14 2017-01-12 15:00 mpss-3.8.1/src/meta-mpss-3.8.1.tar.bz2
-rw-rw-r-- qb_user/qb_user       14 2017-01-12 15:29 mpss-3.4.10/src/meta-mpss-3.4.10.tar.bz2
-rw-rw-r-- qb_user/qb_user       14 2017-04-24 03:44 mpss-3.8.2/src/meta-mpss-3.8.2.tar.bz2
-rw-rw-r-- qb_user/qb_user       14 2017-09-27 12:09 mpss-3.8.3/src/meta-mpss-3.8.3.tar.bz2
-rw-r--r-- build/build   284036 2015-03-09 20:03 mpss-3.2.7/src/meta-mpss-3.2.7.tar.bz2
-rw-r--r-- build/build   307450 2015-05-14 13:51 mpss-3.3.5/src/meta-mpss-3.3.5.tar.bz2
-rw-r--r-- build/build   312421 2015-08-04 18:49 mpss-3.5.2/src/meta-mpss-3.5.2.tar.bz2
-rw-rw-r-- qb_user/qb_user  327366 2015-12-16 04:48 mpss-3.6.1/src/meta-mpss-3.6.1.tar.bz2
tmp:$ tar -Oxvf /opt/intel/xeon/phi/dl/3.8.3/mpss-src-3.8.3.tar mpss-3.8.3/src/meta-mpss-3.8.3.tar.bz2 | tar -jtvf - | wc -l
mpss-3.8.3/src/meta-mpss-3.8.3.tar.bz2
0
tmp:$ tar -Oxvf /opt/intel/xeon/phi/dl/3.6.1/mpss-src-3.6.1.tar mpss-3.6.1/src/meta-mpss-3.6.1.tar.bz2 | tar -jtvf - | wc -l
mpss-3.6.1/src/meta-mpss-3.6.1.tar.bz2
538