I read it, and I don't believe it. Neither IA64, SPARC or Power are going anywhere for at least another decade. intel and HP would rather die then give up IA64 -seriously, imagine being an HP customer that is now being forced to shift from PA Risc to IA64.. are you going to tell this customer IA64 will be put on life support ? Don't think so.. if IA64 dies, so does HP in the server market. Sparc is also very much alive and kicking... well, its roadmaps are. And Power, if anything, will gain marketshare, just look at those PowerPC based consoles (PS3, Xbox, ..)
Nah, x86-64 is not going to take over the world; software is just too important, if it werent, SPARC would have been dead and burried for years. Marketshares may shift further in favour of x86(-64), probably at the expense of PA Risc (EOL), MIPS (EOL), Alpha (EOL) and SPARC, but that has been happening for the last decade or so. If anything, x86-64 may stop IA-64 from conquering the entire PA Risc, MIPS and Alpha market.
= The views stated herein are my personal views, and not necessarily the views of my wife. =