I surmise that there are no plans near or mid- term for 787 services. If there were, I would envisage BRS would be in the process of modifying the existing airport infrastructure (taxiways, stands, etc) to support such operations.
Commercially, BRS is probably attractive to 2-3 of 787 operators (TOM, QR, EK), but operationally I think BRS struggles.
This has apparently recently appeared in the EAD info for BRS:
(g) B787 available taxi routes:
Departure Runway 09:
Taxiway Z to Taxiway G, enter Runway at GX.
Runway 27:
Taxiway Z to Taxiway A, enter Runway at AX.
Source:
http://www.ead.eurocontrol.int/eadba...2015-10-15.pdf