I would like to blame WinRAR and 7Zip for giving me the tools to open packages that enable piracy easier. Please help stop them. Report them to the authorities and bring everyone justice!
You know, there is a search option.
Eager attitude to asking questions is fine, but try to do some research beforehand.
Since you haven't, here's the answer.
I didn't answer because I wasn't sure. I might be wrong.
2. it makes sense to me that everything can be on one sd card, like the 3ds was.
3. redownload, or copy&paste from old sd card to new sd card.
1. yes. There will be updates to the software and such. probably updated using new files on the storage device/computer (i dunno how it will be used to launch) you have the SX OS on.
4. yes. XCI cutter
5. yes, yes