...
What else is coming that is 64bit, has Altivec, that many slots, etc? Sam460 is a good board, but it's a different performance/feature class item. And for those that want as high-end as possible, nothing else is known to be coming that would stomp all over the X1000, or even just somewhat surpass it.
...
Nothing else is "coming" in terms of what can be used for an Amiga like platform, but there's been something delivered quite a few years back; PowerMac G5.
I've held onto my PowerBook G4 1.6 GHz and PowerMac G5 Dual 1.8 Ghz for the sole purpose of running Morphos. BTW, I bought the PowerMac in 2008 for under A$500.00. After which I spent another A$500.00 for an LCD monitor, some extra RAM, extra hard disk, and USB Bluetooth. About a year ago I tried selling it on eBay for A$300.00 and nobody was interested. After hearing about Morphos on G5 I was glad nobody bought it.
