And when mountain lion comes out non 64bit mac users will have a great choice of either the buggiest, slowest, most counter intuitive OS X ever or no icloud with snow leopard. The users of newer macs will of course have to cough it up for the service pack that is mountain lion.
32-bit Macs are already "stuck" on 10.6, but there are some 64-bit Macs that are won't run Mountain Lion (why oh why..oh yes of course, the GPU…!).
I really wish Apple would make an official announcement about how long they'll offer 10.6 security fixes.