Is the signed album gonna be a different (limited) version of the regular XIX album?
Yes! I asked them through 1:1 inquiry and they said it is different with regular album :)
Makestar waits till the order period ends and then starts preparing the items. Once Makestar receives the rewards from the idol's company, then they'll ship it out, which takes a while. So it will take some time before anything gets shipped out, I believe, since all the past projects here on Makestar take a long time before anything is shipped as they have to wait for the goods to be given to them.
I have a same question :/