Re: How will Clark being found by the Kents be handled?
Pretty good topic. I'm guessing they'll just brush over this and not go full into extraneous details regarding his legalisation as their adoptee.
I actually like in the New 52 how government military showed up and took the ship after Jonathan and Martha had taken Clark. As I find it hard to believe a vessel can enter Earths atmosphere now without being detected. It'll probably be explained as some 'stealth mode' entry as we can tell from the comic-con trailer it was hidden by Jonathan.
I also think the meteor shower in Smallville is probably a good way to go. Besides wasn't there set photos of newspaper clippings written by Lois about meteor effects in Smallville?