Well as I see it there are three general technical routes for recovery:
You get preserved good enough that advanced biotech is plenty good enough. Regrowing a body below the neck could probably be done all with "wet" nanotech i.e. bioengineering. Organs would be replaced with "printed" ones, stem cells would fill in the cracks and gaps in the neural tissues, cryoprotectants would get sponged out the moment you start to devitrify to minimize toxicity, ischemic cascading effects would be halted with specially designed enzymes, etc.
It could be you don't have to be preserved quite that well even, if "dry" nanotech turns out to be feasible at some point. (Think 300 years in the future, not 20 minutes into the future -- there are huge technical barriers to this kind of technology compared to biology, which already exists.) Cells could be repaired in place while still frozen in liquid nitrogen under a vacuum, slowly progressing over weeks (or years) until you have a healthy body to thaw out.
Scanning brain pattens into a computer and running you as a simulated being might eventually turn out to be possible. The essential information processing power of neurons would need to be replicated, either digitally or by some kind of analog device. Then you would make use of an extremely sophisticated electron microscope or fMRI to make a detailed map of the brain. This could happen while you are in LN2, or you could be fixed using some future equivalent of formaldehyde and warmed back up. Some kinds of scan might be destructive of the original tissue whereas others might not be.
Whatever mechanism is used, while we may hope for it to be soon, it could be thousands of years in the future. It all depends how quickly science progresses in the various areas and what turns out to be physically possible. Younger people like me can hope that vitrification will get better and better over the course of our lifetimes. Perhaps we will reach a point of perfect brain preservation.