Not sure if anyone else saw this, but it's a bit more information confirmed by Luke Smith regarding raids. Based off how he worded his response, we will be able to essentially save after a couple of encounters in a raid and then continue on in the next day. Basically, we can have checkpoints in raids as to not force us to do the entire thing in a single run. These checkpoints will only last 1 week before they are reset, as well as your eligibility for loot. Some people are also taking his response as him saying you can only complete a given raid once and qualify for loot within a week, and then you must wait for your eligibility to reset the next week. The wording is tricky though, and that isn't strictly there, so that much can be chalked up to speculation.