Elon Musk revealed earlier this month that deliveries of the long range version of the Tesla Semi would begin by the end of 2022

some three years later than originally announced (and five years after the original concept was shown) 

Tesla also just updated all the photos on the official Semi page, further hinting that the manufacturer is on-course its plan to deliver trucks this year. 

only the variant with 500 miles of range will be made available, 

Tesla semi claimed electricity consumption of under 2 kWh per mile and  maximum gross combination weight of 82,000 pounds 

Tesla also says it is capable of hitting 60 mph (96 km/h) from standstill in 20 seconds 

it can maintain the speed limit even up steep grades 

the truck can regain 70 percent of its range in just 30 minutes.