
Sigma’s refreshed Micro Four Thirds and NEX primes, the 30mm F2.8 DN and 19mm F2.8 DN lenses, will begin shipping later in March for $199 each.
These new lenses are priced the same as their predecessors and should be solid additions to mirrorless kits – particularly the NEX versions due to the limited selection of available lenses thus far. I own the 30mm in the older version in NEX mount and have been more than happy with the performance it delivered at the $199 price point.
You can order the new, improved versions from B&H at the below links.
Sigma 30mm f/2.8 DN: Sony NEX version | Micro Four Thirds version
Sigma 19mm f/2.8 DN: Sony NEX version | Micro Four Thirds version

There are several new Sigma lens instant rebates that just launched up to $200 off. Check them all out here at B&H Photo.

The new Sigma 17-70mm f/2.8-4 DC Macro OS HSM lens is now in stock for Canon mounts at both B&H and Adorama.
It also appears to be in stock in the Sony mount option here at Adorama. Note that the Sony version does not include Optical Stabilization due to the built-in stabilization in Sony Alpha cameras; however, Sigma still prices the Sony mount version at the same price of the other OS versions.
All the other mounts are available for pre-order here at B&H or here at Adorama.

Sigma has announced official pricing and availability for the new APS-C format DP3 Merrill. It should be available later this month for $999. It is currently available for pre-order at both B&H and Adorama.