Rockstar, the sneaky bunch that they are, have snuck out a new GTA Online update earlier today, accompanied by some discounts and a free shirt. It seems like your standard fare weekly event with an extra thrown in — namely, a new car.
Just one, though.

We recently reported that one of the recently leaked cars that were slated to arrive in GTA Online sometime soon, the Proto Tipo, was seen on the streets of Los Santos by multiple players. How this was possible considering that the car has yet to be released was beyond the guess of anyone, however it was most likely the result of hacks.
There has yet to be any kind of official announcement (at the time of writing, at least), however it seems that Rockstar has now released the vehicle to everyone, accompanied by a new weekend event.