Does anyone know what they've done with Safari? Safari 4 on Snow Leopard is 64-bit. Are they supporting 32-bit Safari on Windows and 64-bit Safari on OS X? T

Does anyone know what they've done with Safari? Safari 4 on Snow Leopard is 64-bit. Are they supporting 32-bit Safari on Windows and 64-bit Safari on OS X? This could give an indication of where they're likely to go with iTunes.