The last time I heard of something similar it was 4000T and at the time all the James Bond Movies were being scanned at that resolution. The article said it would take a half dozen blue ray discs for that amount of data.
This must be something different, because I read in one forum that Sony is offering 4,000K for $35,000 and a single BR disc for each title. These came with the projector because there are no sources available in that format.
How far off am I? Seems like one BR would never hold all that data.