Apparently the recently announced order for 12 787-10's is rumoured to be the replacement for the LGW longhaul fleet, and that there will also be other significant changes/moving around to help make the operation profitable. (I presume the latter part is referring to shout-haul or the operation as a whole).
I gather they have already started scrapping the 737s and will be replacing them with the ex BMI A320s.