I think the Actuators in the Backhoe could actually be working and not just dummies.
http://technicbricks.blogspot.com/2010/09/1h2011-technic-sets-first-images.html
(it says from EuroBricks, so I'm assuming it's that flickr image from before, but I can't seem to view it)
If you blow up that image, there is a 20(?) tooth bevel gear attached to where the main arm actuator is. I think it would sit nicely next to the pneumatic backhoe we had a few years back. =D
edit: actually, on seconds thoughts, the 'actuator' could be hard fixed to the bevel gear where the bevel gear is the centre of rotation...
The Helicopter looks pretty interesting too.