So you may be wondering: "Why is IF/CH releasing the Re;Birth games to the Nintendo Switch and PS4?" Well for those who have missed out on the PS Vita games or don't have a gaming PC, they've announced that they're gonna release the entire trilogy onto the Switch alongside RB2+3 on the PS4 with the Switch ports slated for a May 23 release in Japan, a later date in North America and Europe and the latter with a date to be determined.

Source: http://ryokutya2089.com/archives/73410

『超次元ゲイムネプテューヌ』過去作品がPS4/Switchに多数展開へ | ゲームよりどりサブカルみどりパークゲームよりどりサブカルみどりパーク

UPDATE 2/28:

Re;Birth Trilogy (Switch) website now live:

https://www.compileheart.com/neptune/re-birth123/

「Switch版「超次次元ゲイム ネプテューヌRe;Birth1」「超次次元ゲイム ネプテューヌRe;Birth2 SISTERS GENERATION」「神次次元ゲイム ネプテューヌRe;Birth3 V CENTURY」」「Switch版「超次次元ゲイム ネプテューヌRe;Birth1」「超次次元ゲイム ネプテューヌRe;Birth2 SISTERS GENERATION」「神次次元ゲイム ネプテューヌRe;Birth3 V CENTURY」」

UPDATE 3/1:

IFI has announced that the Switch ports of the Re;Birth games are coming to the west this year:

https://www.gematsu.com/2024/03/hyperdimension-neptunia-rebirth-trilogy-for-switch-coming-west-in-2024-no-plans-for-ps4-versions

Hyperdimension Neptunia Re;Birth trilogy for Switch coming west in 2024; “no plans” for PS4 versionsGematsu

UPDATE 4/26:

The Switch ports of the Re;Birth trilogy are now coming digitally on May 21 in NA/EU:

https://twitter.com/IdeaFactoryIntl/status/1783888890400534808

Idea Factory International (@IdeaFactoryIntl) on XX (formerly Twitter)

UPDATE 5/20:

NA/EU Switch ports delayed to an unannounced release date:

https://www.gematsu.com/2024/05/hyperdimension-neptunia-rebirth-trilogy-for-switch-delayed-to-unannounced-date-in-the-west

Hyperdimension Neptunia Re;Birth trilogy for Switch delayed to unannounced date in the westGematsu