Olympus and others. Greater mega pixel capacity expected soon? Skinny on E-3

I use an E-510 and like it a lot for my needs but am thinking of a
second body to have two different zooms availably quickly without the
need to change lens. The E-3 seems to have some real advantages but is
pricey.

2 questions:

Do any of you here have extensive experiance with the E-3 and your
opinion of it.

Are there expected increases in mega pixel capacity any time soon for
Olympus or others?

Thanks for any info.

Charlie
.