1. Yes, the "Christmas in July" crates are "limited". When I say limited, I'm hinting that they will appear again somewhere in the future as that is how Z8Games rips you off making you think you have a rare weapon when it was released multiple times.
2. No, unless they are required by law, which they aren't
3. They will simply bring back previous "limited" crates claiming they are "limited" again... Or maybe a crappy reskin of a weapon.