Why Microsoft is using old snapdragon processor ( such as old snapdragon 200 instead of snapdragon 210 on lumia 540, old snapdragon 400 instead of new snapdragon 410 in Lumia 640) . Which processors do you think that Lumia 740 and 840 would support? I expect Snapdragon 610 processor for Lumia 740 and Snapdragon 620 processor for Lumia 840 would be great? What do you think ? And I have heard Snapdragon 615 processor heats a lot and not so nice performance giving mid range processor? Should Lumia Smartphones skip this Snapdragon 615 processor in mid range smartphones?