apple have been saying since kingdom come
before tiger, they said tiger will bring better multi core
then tiger came and look still the same shit
they then promise leopard.....
I'm still using panther because my iBook uses a PowerPC processor.
I don't remember Apple promising multi-core support with the release of Tiger Tiger was released in 2005 & back then I don't think there were such things as multi-core processors . If I remember, the talk back then was about 32 & 64 bit OSes.
For most of us the choice of OSes is between Windows & Mac. (Linux is still a minor played) Looking at the track record of the 2 companies MS has dropped the ball badly with Vista.
Personally I don't use all the bells & whistle that comes with a modern OS. However heard that Snow Leopard is being optimized for speed & that is something I can appreciate. So may replace my iBook if it turns out to be true