HI Tom
I'll join my voice to the others - I've actually completely stopped following SLR rumours and new releases for the first time since digital appeared. I really can't imagine anyone bringing anything out which would tempt me away from my A900 - Like Eoin, I don't really need high ISO, but I've used it for concerts with the 135 f1.8, low light in weddings etc. without issue.
It's an excellent camera, but what's important, it fulfils my mate Neil's definition of good technology:
It's never irritating.
Sounds like a little thing but oh no!