More coverage from Ashlee Vance on the Intel Developer Forum. The whole article is interesting and short, and you should just read it. Here’s one nugget (but there are several):
He described Larrabee as a multi-core, programmable part that will use a tweaked version of the x86 instruction set. Intel expects software developers to craft specialized applications for the processor, giving them a boost on some of the most demanding workloads.
Intel is publicly placing the chip as an easier-to-use GPGPU play and says it will reach “at least one teraflop (sic).” Larrabee demonstration chips “with tens of cores” are expected next year.