Rumours are that the repair patch (for want of a better word) arrived at LHR on far eastern airline (SIA?) last week.
If true, that would pretty much rule out replacement of the tail barrel section - there is only one aircraft out there that can carry the 787 barrel sections and that is the Boeing Large Cargo Freighter (LCF - better known outside Boeing as the "Dreamlifter").
I figure Airbus was quite happy that Boeing came up with the LCF - it's the only airplane out there that's more
ugly than the A380
.