Tesla updates its cars more like Apple updates its iPhones, issuing software updates frequently, and the occasional gotta-have-it hardware changes whenever it darn well feels like it. This year, along with the software, is a new all-wheel-drive P85D model that literally offers "Insane" acceleration.
Tesla model year changes do not coincide with updates and improvements. Rather, Tesla simply adds features and options as they become technically feasible. Hence the center console data screen shows fields for blind-spot warning, lane-departure warning and all-wheel drive, all desirable, but with none not yet offered on the 2014 car.
About Tesla Model S
Designed from the start as an EV, the 2015 Tesla Model S is a roomy 5-passenger electric sedan boasting excellent cargo room with advantages in range and performance that its rivals can't touch. Tesla itself is run more like a tech company than an automaker, making for a unique ownership experience that could hint at the future of the auto industry. For now though, the Tesla Model S stands alone, with its long cruising range and network of "Supercharger" charging stations taking some of the guesswork out of recharging. This year, the all-wheel-drive, high-performance P85D Model S debuts. It can blow the doors off virtually any sedan you'd care to mention...and a lot of supercars as well.
Tesla Model S vehicles for sale