Not much. Breath of the Wild 2 was probably intended to release in November or December. But now with COVID-19 (and even Nintendo's notorious delays anyway), I don't think it will release until March 2021. Maybe we'll even have to wait until Summer 2021, but I doubt it.
The most we can expect are the rumored Mario remasters, a Mario spin-off (Golf or Party), a Wii U port or two, and maybe some smaller-scale IP.
I really thought this was going to be the best year for the Switch, but nothing has topped 2017 yet. And mind you 2017 didn't even include January or February and also had some obvious flaws.
2017 was a big year for the Switch, 2018 was more of a lull, 2019 ramped up more, and 2020 seems to be the most barren in terms of software and hardware shortages. I just hope Switch can give a year as good or better than 2017 before it gets replaced. It seems like 2020 will be a year full of ports and remakes for the Switch.
Lifetime Sales Predictions
Switch: 161 million (was 73 million, then 96 million, then 113 million, then 125 million, then 144 million, then 151 million, then 156 million)
PS5: 122 million (was 105 million, then 115 million) Xbox Series X/S: 38 million (was 60 million, then 67 million, then 57 million. then 48 million. then 40 million)
Switch 2: 120 million (was 116 million)
PS4: 120 mil (was 100 then 130 million, then 122 million) Xbox One: 51 mil (was 50 then 55 mil)
3DS: 75.5 mil (was 73, then 77 million)
"Let go your earthly tether, enter the void, empty and become wind." - Guru Laghima