Under Night In-Birth Exe:Late[cl-r] for PS4 and Nintendo Switch finally got a release date recently. Under Night In-Birth Exe:Late[cl-r] is an updated version of Under Night In-Birth Exe:Late[st] (currently available on PS4, PS3, PS Vita, and PC) for PS4 and Nintendo Switch featuring loads of balance changes, a new character, and more. Today, developers Arc System Works and French Bread announced an upgrade option for PlayStation owners of the game in Japan.
Owners of Under Night In-Birth Exe:Late[st] on PS4 will get a free balance patch when the new game releases. Owners of the older game can pay to completely upgrade to Under Night In-Birth Exe:Late[cl-r] from Under Night In-Birth Exe:Late[st] as well. Owners of Under Night In-Birth Exe:Late[st] on PS3 and PS Vita in Japan will be able to pay a discounted price to buy a digital copy of Under Night In-Birth Exe:Late[cl-r] on PS4 as well. This offer is available for a limited time.
As of this writing, the offer has not been announced for North America or Europe but given that Arc System Works and French Bread have stuck with the same publishers for those regions, it is likely the upgrade options will be available
Under Night In-Birth Exe:Late[cl-r] releases on February 20, 2020 for PS4 and Nintendo Switch.