Yep, e510 body is available on amazon.com for $799.
e410 body goes for $499.
I might get a e410 to back my E1 till the new pro comes out, probably and mostly just for panos.
For portraits I think E1 still kick .
And I agree with Louis when he says price wont matters that much for pros (in context).
Still, if they get the P1 @ 12mp and the price to compete with the 5D I think we have a contender...
And definetely the P1 is worth considering for I do professionaly: panoramics and HDR for visual effects. The 5D is right now the main choice for that kind of work, the 1DsII being the top choice.
The Zuiko's is what makes things interesting...