I want to make custom storefront for new DPS (Digital Publishing Solution)
I found API and tutorial for old DPS.
Custom storefront hands-on tutorial (Version 1 API) | Adobe Developer Connection
But I couldn't find API and tutorial for new DPS.
I want to list titles of collection(instead of Folio) with original design.
Library/Store API is available for new DPS custom storefronts ?
No you can't. And it's unclear, if you ever will be able to do a storefront as customized as with the DPS Classic.
There will be various extensibility features to the storefront though, of which one could serve your needs.
See this discussion:
Custom storefront for DPS 2015