Let me present a different explanation.
Torah has many concentric levels. Its outer level is Pshat, which represents the Halachah - the Law - the application of the Torah in this world. As we know, this world is not a goal on its own, but a tool for achieving a higher spiritual state (by working out our primordial sins etc.).
Once this level is reached (and the sins are mended), the evil inclination is cancelled, there will be no choice and hence no commandment, therefore there's no need for that layer of Halachah. The holidays will disappear, there will be no money, no lust, no transgressions. Obviously, the Pshat will loose its meaning - "don't steal?" -what do you mean by that? just like plants can't steal, we won't be able to steal.
Therefore, this new and higher "reading of Torah" could be called a "new Torah" for as, as we are used to the current level of reading it.
Possible ramifications (base on the above):
The meaning of existing words will be altered to represent more spiritual concepts (as it is now on Drush and Remez levels).
The written Torah as we know it, will be either literally rearranged and read differently.
The Torah will return to its original Hebrew font.
The letters will "dismantle" to represents the actual 600,00 letters.
The Torah will loose punctuation and spaces (see #2), and read in more that 1 direction (dimension), as it is read now.