We finally received definitive confirmation that saves from the Xbox 360 version of Minecraft will be able to transfer to the Xbox One edition. Phil Spencer (@XboxP3), the newly minted head of Xbox tweeted yesterday:
After months of teaming up with Mojang, we can confirm that Minecraft X360 Edition will save transfer to Xbox One Edition…more news soon!
For those of us who have put in over 100 hours into this version of Minecraft, this is fantastic news. Can’t wait to play another 100 hours.