Some significant changes are coming to the next iLife suite, a "well-informed" source claims. The software is first of all said to be going 64-bit, potentially providing significant performance boosts within Snow Leopard. Allegedly being dropped as a default app is iDVD, Apple's disc-authoring tool, which as been available for Macs since 2001. While it should still be an option, people will have to download it, the source says.