Numbers can be changed, but it still feels wrong especially since Blizzard did put this line in their Class preview:
Source
And also
I like the idea of having two schools of spells, one that deals more damage and one that would heal slightly more (even if just via the artifact) feels better than having one spell do it all. One can dream
I mean, we had Mind Blast, SW: Pain, Shadow Mend and a talent for PW:Radiance. Two of those are actual damaging spells, one is a DoT that can be changed into a Holy/Fire spell. Now we have only that DoT. How are we using Shadow Magic again? To heal?
Here's hoping we'll get something to replace Mind Blast at the very least.