Trevor has already said he's working on future models with Varisys.
The gestation period for a new machine when you're a small team is in the region of 2-3 years, further complicated by things like the Xena - so I'd class having two machines released in the last two years as being current. If we were using ARM chips we'd still have the same development time more or less - we don't all want portables, after all; some of us still want desktops and that's mostly unexplored territory for ARM.
My reply was about any announcements with hard tech information which, to the best of my knowledge, has yet to appear. Small mobos prototyping should never take 2-3 years if the ODM is worth a damn. ARM has the one advantage that there are plenty of designs out there that anyone can take advantage of and have dev boards ready to go for porting in the matter of months if not weeks. Look at what Genesi has done with ARM systems. Once the A16 is released, there is your desktop worthy ARM.
You have to admit that compared to the Dark Ages (i.e. between the end of the AmigaOne XE line and the arrival of the Sam), it's positively thriving. Nothing happened in those years hardware-wise. Now we only have two companies making new hardware, but that's still two more than we used to.
I don't count the netbook because we don't know anything except it's probably not new hardware.... this thread is about hardware.
I will point out that this community was multiple times larger during those "Dark Ages." Had Hyperion ported OS4 to Pegs earlier, I doubt the SAMs would have been offered. So here we sit and the total population world wide is probably down in the mid 4 digits vs mid 5 digits ten years ago, if not higher. Once herald Amiga fairs drew hundreds and now if a couple of dozen show up, it's called a success. The constant adding of new OS4 core devs draws attention to the fact the OS4 core dev pool is constantly losing proven talent. The only hope I see is if Trevor spends a whole lot of money on designing and building cheap and powerful PPC systems that he will probably never see a return of investment on. If he has deep enough pockets for the Amiga charity, more power to him. As far as ACube is concern, I don't know where they are going to go from here if their embedded customer needs the 400 series as it's CPU core.