Alright so Bendis is out and Johnson is in with Infinite Frontier with this two part story between his Superman and Action Comics titles. And what is this issue all about you may ask? Honestly while the story is on generic green alien monsters (seriously these might as well just be flying green xenomorphs) the main crux of the issue has to be between Jon and Clark as well something that I assume will establish a later crossover.
Now essentially Johnson here is acknowledging stuff that Bendis ignored with Jon being back, basically how awkward it is for everyone now. Because you need to look at it from everyone's perspective, to Clark and Lois Jon went from 11 to 16/17(?) in a manner of weeks but to Jon he lived those years. There is a bit of tension there as Jon reflects on his past but Clark hopes that he can get those years back in a way because he is much closer to them then Jon.
Another thing acknowledged is that Jon actually talks about people calling him Superman, and he doesn't like it. Because Jon actually kind of acknowledges some readers opinions, that Superman is not a job position to be passed down but actually Clark. It actually is a bit more emotional for Jon because Clark is his dad and he doesn't want anyone talking about his dad going away and Jon having to just simply replace him likes its easy. I actually kind of like this because we as readers are focusing on our fandom but the character of Jon just doesn't want anything to happen to his father because he cares about him and the day that Jon may take over as Superman may actually mean for Jon the day he loses his father because the only way he is The Superman is if Clark is dead or missing. It actually builds a bit more emotion into as its not "I don't think I'm ready to stand in your shoes", but instead makes it "I'm not ready for you to be gone", and that kind of emotional connection is something I hope that gets done with more as stories progress. I think this issue did a good job talking about the Kent's awkward family troubles at this time, though I hope Lois gets more to do.
Now onto that idea of why I think there might be a crossover.
spoilers:end of spoilers
Amanda Waller caused the freaking aliens, its basically a dimensional test by Starlabs working for Waller and while the aliens are fighting Clark and Jon they are relaying information on Clark's weakness to the aliens and Jon's strength to Waller. My assumption therefore is we are going to see a Superman and Suicide Squad crossover, especially if Waller has her hands on Conner.