Kind of interesting, but I'm not sure if it means anything. The Itanium is hardly used, so it won't have an impact for x86. I thought that Itanium was no longer in production, but apparently it is in very small quantities. For reference the IA-64 came out in 2001.
Doing a little more digging I came up with some numbers for an x86 timeline.
1971 - 4 bit 4004
1972 - 8 bit 8008
1978 - 16 bit 8086
1985 - 32 bit 80386
2003 - 64 bit Athlon 64
It seems like development of wider busses went fairly quick for the first 15 years then it took almost 2 decades to reach 64 bit processing. With it being 6 years and hardly anything using 64 bit processing to its potential I'm guessing it might still be another 10 years off before 128 bit makes it way to x86.