>> the latter idea may be tackled by another contender according to rumours:
>> http://www.extremetech.com/computing/185888-vias-new-isaiah-x86arm-hybrid-cpu-outperforms-intel-in-benchmarks-but-will-it-ever-come-to-market

> Neat approach.

No release from VIA/Centaur so far, but an announcement of a MIPS core and chips with x86 and ARM compatibility from BLX/Loongson:

http://blog.imgtec.com/mips-processors/loongson-mips64-processors-performance-barrier
http://venturebeat.com/2015/09/03/chinas-loongson-makes-a-64-bit-mips-processor-that-can-run-x86-and-arm-code/
http://www.cnx-software.com/2015/09/03/loongson-introduces-mips64-3a2000-3b2000-processors-based-on-gs464e-architecture/
http://translate.google.com/translate?&sl=zh-CN&tl=en&u=http://www.loongson.cn/news_info.php?id=326