Ah, so many questions. I'm afraid I can't answer much without giving spoilers but I will answer 1. Yes, they will be going to New Krypton. It's briefly mentioned in the prologue that all Kryptonians have to leave Earth except for a small embassy (basically just an ambassador and a few aids). This means Kal has to leave as well and his wife must go with him.
It's all very unfair for Lois. She hates it but she's also willing to sacrifice her happiness for the sake of all the people of Earth - at least for now. Living on New Krypton is going to be quite the trial for her. Honestly, the people of Earth ought to regard her as a heroine but people are fickle and once the threat is gone well...
I will say this - Kal is not going to be the bad guy here. I hope that came across in this chapter. Circumstances may be different but he's still the guy we all know and love.
