What’s new in Lion: Versions, Auto Save, and Resume | Operating Systems | Macworld. These features alone will save people time and money when Word crashes. And it will crash no matter how well you maintain your system.
Developer preview of Lion arrives with more new features Operating Systems… – StumbleUpon. Nice summary of what the new version offers and why it might be helpful. I think this will be another must-have upgrade. Many nice features that will make things even easier for people. I love the AutoSave feature.
Then you should look at ForeverSave. It allows you to do versions and has extensive controls. Read more about it from someone who uses it here.