Lensbaby have released their Sweet35 Optic with mechanical aperture and my preferred focal length of 35mm (f2.5)
The previous Double Glass Optic was 50'ish' mm with drop-in apertures (f2)... although I would only recommend shooting with these from f4 upwards.
Little more than a toy when compared to some of the Tilt Shift optics out there... the unique proposition of these are the in-shot focus drifts and breathes.
I welcome the 35mm focal length...particularly on a S35 sensor where the 50mm is a bit tight for lots of work. Optically I could not see a huge jump from the double glass optic, but the mechanical aperture is a great addition. Slightly more edge vignetting as you shift with the Sweet35.
Here are some bits of my motion work with the Double Glass optic...looking forward to using the 35!