Hello, ex Sun Microsystems employee here, working in Fujitsu engineering since 2010. Posting here since I think this is more relevant to Oracle given we sell SPARC basically only in Japan.
During the last year Oracle and Fujitsu worked for an highly confidential and secret agreement to have Oracle develop Solaris and Fujitsu buy the Systems LOB and develop and sell SPARC.
In the past months LE and MH killed that agreement. There have been some attempts to modify someway the agreement and go on, but unfortunately a final decision has been taken.
LE and MH refused to continue to invest in Solaris, and asked Fujitsu to buy the entire SPARC/Solaris LOB, which Fujitsu correctly refused to do since was not the original plan agreed and out of our core business (which is mainly HW, not SW).
Oracle will simply let SPARC and Solaris slowly die, i.e. Oracle will continue to sell SPARC systems until there is reasonable demand, and then will simply close the LOB and layoff all people. Estimated deadline for the closure is 2020. In the meanwhile Oracle will develop a Linux for eMAG cpus to be used in their own cloud (i.e. Oracle will also get out of the x86 business).
Fujitsu still have in the public roadmap the new SPARC64 cpu in 2020, but the plan is actually unconfirmed and given the situation there are many discussions to just freeze the SPARC64 development right now and invest the budget in a general purpose porting of Post-K. Knowing my own company, I hink this will be decided in the next weeks. My suggestion is: don't expect anything beyond S64 XII.
Unfrotunately this means the death of SPARC and of Solaris, even if the support for the existing systems is granted for many years. What a pity for such a powerful and elegant architecture.