It's been announced, and is surely being designed, but they are only building hardware for V2 right now. Most likely V2 will continue as long as they need to get dialed in what they want V3 to be, then they will switch. V2 seems to be based on the learnings from V1, and I think V3 is the real design they want to fly-- but V3 depends on Raptor 3 and probably other advancements, and Raptor 3 is still at the testing stage in MacGregor.
For instance the V2 design seems to use Raptor 2.5 which is a Raptor 2 variant with Raptor 3 style interface with the ship. So they are testing the ship design to support Raptor 3 before they have Raptor 3.
The engines are really heart of these things and drive the development cadence.