Sigma launches new ART versions of their 30mm and 19mm f2.8 and new 60mm f2.8 lenses

On the MFT side, a more expensive 19/2.8 would be a tough sell against the Panasonic 20/1.7, as it's a stop and a half slower, longer, and not as sharp.  The Sigma does focus faster than the Panny but not as fast as Olympus MSC lenses of which there is a new option in that FL (17/1.8). The 30mm on MFT is also a bit of an unusual FL (60mm EFOV) and did not appear to be a big seller at $200.

On the NEX side, the new Sigmas will probably sell better but with the Sony 20/2.8 and 35/1.8, any price hikes will make them much less popular.  I can't say I see the point of a redesigned 19 and 30 if the prices will go up.