As far as I know Oracle stopped developing SPARC systems, it is all Fujitsu now, including the chips.
Fujitsu went with ARM for their latest performance machine.
So far they only announced to go with a heavily modified ARM ISA for their next-gen supercomputer (forgot the name), while saying yadda yadda remain committed to SPARC yadda yadda. At least as far as I know. Probably still means life-support-only for SPARC.