It has just arrived, the Flagship version that I ordered. I have mixed feeling about this new model so far, after 30 minutes of play.
I have heard that the corner cutting has been improved from the tornado v2, especially the reverse.
Yes, it has improved, and IMO, only the reverse corner cutting of the V2 was a concern.
Here are what I have found so far about the Flagship. I have set the magnet strength to 4, and left the spring settings unchanged at 3. It is louder, sounds sharper (higher pitch), feels less smooth and not as nice as the V2. It feel "airy" and is not as solid as the V2 when turning. I don't like this airy feel. I suppose this is similar to the latest lightweight Gan cubes. I only have the Mini M Pro. The Flagship however weighs the same as the V2, even with the additional core magnets. In short, the V2 feels noticeably nicer to turn and also sounds better. Quality is good and edges are smooth though on the V3.
The spring adjustment dials of this V3 cube are also a disappointment for me. The use of transparent plastic makes it harder to see those little numbers and colours representing strengths of the settings. The old opaque white dials are much clearer. Photos later. The "dish" underneath this centre piece is now larger and have holes. (See third photo). There are apparently weight saving changes, besides the shape changes (that helps corner cutting). Here's an example of a change in shape. If you look closely at the edge pieces, you should be able to see a subtle change. The curved edge that faces the centre piece is more curved now than in V2. See the last photo. The cube on the left is the V3, and the one on the right is the V2 (with primary colour). Compare the shape of the white pieces, and also the size of the hole in between the pieces. I believe those changes, among other things, are helping the corner cutting.
I have three V2s (one is the primary colour version). So I am very familiar with it. This new V3 Flagship is faster, more snappy, corner cuts better, and should be clearly better in terms of performance. Many reviewers mentioned it is similar to the V2, but I think it is more similar to the Moyu WRM 2021 in terms of the sound, the feel and performance. I however missed the quiet, muffled sound of the V2 and its fluid turning. I can see speedcubers really loving it, since speed is all that matters to them.
UPDATE after another day. This cube benefits a lot from breaking in. It is now smoother and a little bit quieter, though clearly less smooth and less quiet than V2. It is again very similar to the WRM 2021 when solving, but lighter. The cube that I found to be similar to the V2 and also quite smooth is the WRM Maglev, which is however clearly heavier. It's a good thing if these two makers are learning from each other.