I would say early next year. I actually belive when they said they havent anounced everything coming this year for the switch. While for MS they basicly said nothing is coming for a while and will be as barren as the last 2 years have been until the next box comes out in 2020. So i expect NS to rise after the anouncements while the xbox will drop soon.
When did MS say a new system is coming in 2020?