There were some troubles with getting them but they are finally there. The new 2011 Bolt. For this year the Bolt will also be in the sizes 3.4 and 3.7. As some use them in Pozo conditions. I also use the Bolt in all sizes. Only my smalles one is 3.7. The pictures are made with a fish-eye so the shape is wrong on the first two pictures.
To see what changed I rigged the 2010 4.7 and the 2011 4.7. For 2011 the sail changed a lot. The red one is 2011 the blue one 2010.
The first thing that you notice is the foot batten.
It still crosses the boom, but for 2011 it passes the clew a little bit.
The second thing and for me one of the most important things is the top of the sail. For this year the top is lighter. Also the sail has more luff curve, causing the third batten from below to get tighter away from the mast. This makes the top of the sail flatter and when you have a flatter top the sail will duck easier.
More testing results soon, when I tried it in the water.