Today, Tez2 highlighted that there have been changes made to the list of games available to GTA+ subscribers on the official website. These changes are not yet visible to visitors of the page, but they will be showcased in the near future, possibly in early August when the next bonus period updates.
According to these changes, those who pre-purchase will be able to play GTA: Trilogy — Definitive Edition, Red Dead Redemption, and L.A. Noire on the portable Nintendo Switch console. How exactly this will work is still unclear.
Source: gta.com.ua