Today (2017-06-15) DSM 6.1.2-15132 has been released.
I tried an update on a bare-metal Intel system (Loader 1.02a, DS3615XS) with NO luck! To get the system up and running again you have to boot from a live linux system, mount the system partitions and copy all files from
/lib/modules/update
to
/lib/modules
After that unmount the partitions, shut down the system and plug in your XPEnology boot stick/card.
Polanskiman wrote an excellent tutorial on how to gain access to this partitions: