So Secret Wars 9 is officially out. Spoilers and thoughts ahead:
spoilers:end of spoilers
Seriously, Spoilers. I warned you.
The book basically breaks into three pieces. There's the Doom/T'Challa battle that serves as the finale of Battleworld. Doom wins but realizes that this was all a distraction and leaves without killing T'Challa. He wisely flees to find Owen where he's confronted (verbally) by Susan, who has learned he killed Strange. Doom finds that even though he wants to stay and fix this, he has to move on towards Owen and regretfully leaves Susan and Val.
In the Molecule-cave(tm) The Maker has predictably turned on Reed but managed to forget about Molecule Man in his arrogance. Molecule Man saves Reed and does away with The Maker. Doom arrives to confront Reed but finds that Owen has reduced them to the same powerlevel. Owen wants to hear Reed's side too.
There's fistcuffs galore as Reed and Doom work through years of mutual history culminating in Doom admitting that Reed would have done a better job of it. Owen agrees, Battleworld appears to end (more on that later) and T'Challa uses the Time Gem to save his life. We move to Act III
Here we find that T'Challa has time travelled back to the events of New Avengers Vol 2 Issue 1. Things play out right up to the point where the incursion is discovered only this time there is no incursion, just the birth of the Wakandan space program. Continuity fixed! (More later).
We find Reed rebuilding the multiverse with Owen and Franklin's help. Sue, Reed, and the Future Foundation are planning to go on the greatest adventure of all and we learn that Reed is the one to fix Doom's face. It's a silent scene at the end with Doom, but immensely powerful as we see Doom ultimately learned a powerful lesson (think the quiet epilogue to Infinity Gauntlet with Thanos and Warlock). The END!