We'll have to await the conclusion of the review process before we can celebrate anything, but things are certainly looking good. Whether or not this truly amounts to a "Muslim ban" is debatable, but Trump didn't help his case by campaigning on the promise of a Muslim ban. Now any proposal to limit travel or migration from a Muslim majority nation will be immediately viewed as a ban on persons of the Islamic faith, which is exactly the perception the courts and American public should maintain.
Absolutely not , unless it has religious exemptions the order is not a religious ban and it should not be overturned.
So, by that thinking, we should never have struck down literacy tests for voting? After all, they weren't explicitly racially discriminatory. Just look at the written words and never mind the effect, right?
That said, this is weak sauce. I expect that by the time it makes it to the Supreme Court, they'll be back to a full court and the EO will mostly be allowed to go forward. The temporary 90-day ban will be moot as by then the review in policy that it's supposed to give time for should have been long done by the time this get to SCOTUS.