it's still a little early for those to be shown, but in the case of both achievements and trophies i have seen them go live for games wayyyy before release. the earliest i would say we could see these is late june. i'm an achievement/trophy addict so i know way more about these than i should
my best guess is that there will be trophies for each playset and the toybox all in the core game (the 1000gs or the platinum trophy) and then if they decide to add more (which they should because completionists would buy more figures lol) they could add dlc achievements and trophies for the additional playsets (like cars).
quick clarification. it's weird to think but both MS and Sony have rules for these in place for developers and one of them is that the consumer cannot be forced to buy additional merchandise to complete the main 1000gs or platinum. so any additional playsets at launch won't be in the main list.
yay trophies! (i'll definitely be making a trophy guide for this forum when it comes out
)