Updated December 16th, 2015.
Looky here– Apple finished Snow Leopard (Mac OS X 10.6) early! The software, which costs $29 for Macs with 10.5 already installed, will be available this Friday.
If you want to know more about Snow Leopard, click here.
If you want to buy a copy of Snow Leopard, click here.
I will install Snow Leopard as soon as possible and report my findings, good and bad. Stay tuned.