If you are curious about which Mac OS X applications have already made the transition to Universal Binaries, Apple has put together a list of Universal Applications. At this time, MacFamilyTree is the only genealogy application listed as a Universal Application, although most reports are that current Mac OS X genealogy applications will run just fine under Rosetta.
We have a short page dedicated to explaining just what a Universal Binary is as well as how older Mac OS X applications will run under “Rosetta”.
On a related noted, the MacBook Pro is shipping with a faster Core Duo CPU – 1.83GHz and 2.0GHz, along with BTO options of upto 2.16GHz.