I know its a Lo res (highly magnified) image, but it looks to me a lot more like 2 x 40' containers on their side than any part I could recognise as Boeing.
Aircraft (especially when badly bent) dont look so square. The tail of AF447 springs to mind.
No ELT heard from the P3? Or have I missed a good explanation?
Having written this I have no doubt there will be a PC announcing confirmation of fuselage pieces!