Cause the old post is a long way away…
Rich Baker did a live chat on the new Dark Sun today. Lots of interesting info, some of which speaks to our questions!
Most importantly: “Preserving is the default. If you just cast a spell and don’t say anything, you’re assumed to preserve. However all arcane characters have a new Defiling at-will power, which you can use when you use daily powers, at the cost of hurting your allies (and killing plants, of course).”
That’s very cool. Bonus damage available at a real price.
Also cool: no divine power. The divine power source doesn’t work there, cause no gods. That is a big change to 4e world design philosophy, and a good one.