new artboards feature is awesome, but I can't seem to find a way to save artboards as separate .psd files, how is that possible?
That's not possible right now, but I put in a request for it. Hopefully they will have more export options soon.
My current workaround is to select the Artboard's name in the layers panel and convert to smart object, then Save As... and select photoshop from the file types allowing me to save it as a .psd. Just tried this for a web design comp so I could extract in DW and it worked well:)
Just simple right click on artboard and click on Ungroup Artboardts will leave you in clasic PSD document with same dimension without any artboard.