2019 could be a very interesting year if we speak about hardware. Sony and Microsoft will, presumably, announce PS5 and Xbox Scarlett, while Nintendo could release a new Switch model in the second half of 2019.
The source of this info is The Wall Street Journal in Japan, a well known (and trusted) source when we look towards the land of the rising sun. At the moment, the WSJ only states this Switch revision is set for the second half of 2019 and suggests that the display could be improved. However, the specs are not finalised yet, so we’ll have to wait a little longer to learn more details.