Well, plenty of Classic Amiga users are graphic artists, and the same software runs on the new ones, so they can carry on using familiar programs but with more resources.
The new Amiga also heavily leans in the direction of ATI Radeon chipsets, so there will probably end up being at least some capacity for video work - especially given that, again, there's some people out there using their old Amigas for that (though they'll have to leave the beloved Toasters behind).
As for other stuff, there's a big pile of old software (and some new) that allows most of what can be done on PCs/Macs, but in a 'lean and mean' package with a familiar user interface. Personally I'm looking to get one for DTP, as I seem to have outstripped my PCs abilities.