Late responding to this but... go for it, if you can. You just might like it.
Copypasta spoilers from a guy called Autonywork on plus4chan's /co/.
The big one:
King Acorn is King Max, but not the one we know. This is Max!New, who looks far younger and almost seems a cross between Max!Old and Elias. And a kind old sport, not a douche. (Sonic even has a thought bubble about him not being a jerk.) In addition, he now has a full squirrel tail, just like Ray the Squirrel. Curly and everything. And a new crown. I'll have a picture tonight if no one posts one sooner (use spoiler image plz).
The rest of the story:
When Naugus leaves that's it, exit stage right, no return in the issue.
Nanites are gone. Nada. Zip.
Tails Doll is controlled by a Command Core (not the exact name, but I haven't the issue at work), which is apparently a common thing in this new world. It eats the surrounding landscape to heal itself until Sonic and Tails managed to pull it out.
After Nicole is thrown outside in her little tricorder, the mechanics mess up a bit, breaking the speaker. Tails finds her but her hologram seems to indicate he should stay away; he doesn't notice this, though, and when he picks her up she shocks him and he remembers everything from WC and both timelines. This also "defragments" her and she spends the rest of the issue fairly incoherent (whether or not she also remembers everything now is unknown.) After they beat Tails Doll, Sonic starts to "remember" (for lack of a better world) the new timeline.
There is a "New Flashback" quickly comparing Robotnik (looking more like modern Eggman) meeting King Max in the old timeline to Eggman from the Genesis games meeting King Max!New.
Naugus had trapped King Acorn in a holding cell below Castle Acorn and managed to use some tech from a prior Eggman attack to make it extra secure. For whatever reason, Nicole was left with King Acorn, and apparently could still render a physical form but some power source died before Naugus took her and trapped King Acorn.
Speaking of Eggman, he landed in southern Efrika in the remainder of the Machine X from Worlds Collide, along with Orbot and Cubot. All of them completely remember the WC events and the prior timelines, Eggman mentions Wily by name (well, "Al"). No mention is made on the new timeline, as I recall, and Eggman even starts pushing his busted Eggchair across the desert and hopes there's a nearby base...
Anyway, the Freedom Fighters had gone on a mission to find Sally, and the last transmission back to Mobotropolis was a "heavily encoded" message from Rotor, a set of co-ordinates that Sonic and Tails are going to go after. As they're talking about who could remember changes, Nicole tries to offer some advice about finding the FF and Tails takes this to mean that if they find people close to Sonic, they might remember upon contact with him. Interestingly, King Max rests his hand on Sonic's shoulder but is still not aware of another timeline (and they don't tell him.)
A final page shows us a heavily-shadowed Sally(!New, if it has to be said) hiding in the Death Egg as EGGSwats run around trying to find her.