Core 2 Duo is the name that will replace Pentium. It shouldn't be pentium 5 because the 2 processors are completely different. Conroe is I believe the core (like prescott for the p4) so in the future there will most likely be other cores other than conroe that will still be under the Core 2 Duo name (untill we hit quad core, which will most likely be somethin like Core 4 Duo. doesnt have the same ring tho.)