The Niconico page for Atlus’ Tokyo Game Show 2017 live stream on September 24, the contents of which are yet to be announced, features a banner to pre-order the limited edition of an unannounced PlayStation 4 version of Dragon’s Crown called Dragon’s Crown Pro.
Clicking the banner brings you to the Dragon’s Crown official website, which currently does not mention the PlayStation 4 version.
It is likely the PlayStation 4 version was planned to be announced in the lead up to or at Tokyo Game Show 2017, which runs from September 21 to 24.
Dragon’s Crown first launched for PlayStation 3 and PS Vita in summer 2013.
Thanks, Hachima Kikou.