Seems a bit like they are going back to their roots
I remember when we had i386 and then i486 (back when AMD made clones, the "i" distinguished them), then they stopped licensing the designs and changed the name of the next chip to Pentium (as it allowed copyrighting....a number cannot be)
Pentiums would have been 5th generation CPUs (hence the "Pent"), I guess that makes Core2 sixth generation......Nehalem = i786 ?
Perhaps numbers aren't a problem to them any more now that there is a VERY distinguished difference between each manufacturers CPUs? I'd have loved to see it called i786 or i80786 for "old times sake"