Doesn't look that much different; both have the rear of the fuselage and wingtips nearly inline, both have continuous leading edges from nose to wingtip, both are similar in scale. Additionally, those hangar shots appear to show a an uplink antenna panel (the circular / ovoid composite panel on top), like on the Sharp Sword photos.
Lastly, it'd make sense too; if these photos are both recent - there'd be multiple airframes being developed for different test roles.