I've seen a gazillion 'New Amiga Computers!!!!111!' over the last 13 years been announced. From the Walker to the A/Box to the BoXer. And what has the net result been? A bunch of buggy rebadged PPC boards running OS4 and a bunch of other PPC boards running MorphOS. Woop-dee-doo.
And after 13 years somebody announces another 'New Amiga Computer!!!111!' which will take over the world, solve worldhunger and give me a fluffy bunny?
Time for a realitycheck.
-edit- As for why that webshop is telling you the fuk that? I don't know. Sure, there might be finally someone able to deliver another PPC board which can run OS4, but I'll believe it when I see it. And then what? How will you sell the world (that is, the world outside Amigaland) this PPC board+OS4?
-editedit-
What I'm trying to say, enjoy the various Amiga-platforms for what they are: cool hobby platforms. Don't expect the second coming of Jay Miner anytime soon from any company, especially if that company wears the name 'Amiga'. Like I said, commercially as dead as a dodo.
That webshop you linked is a nice example: it lists exactly 24 Amiga products, of which one is a T-Shirt ;-).