New Sigma 17-70mm f2.8-4 DC OS HSM Macro gains OS, f4 (previous model was f4.5)
You can thank the introduction of sensor-shift stabilization in DSLRs and MegaOIS in compacts for "strongly encouraging" the other manufacturers to make affordable optically-stabilized lenses! Today Shiguma has announced a new 17-70mm f2.8-4 DC OS HSM Macro lens! You can read their press release at the Imaging Insider.
The lens has the "equivalent" of around 24-105mm, which is a rather versatile range, when you consider it is also a Macro and has OS (optical stabilization) capabilities. The lens will be available in the four traditional SLR mounts (Canon, Nikon, Minolta, K-mount) and Sigma, where I am sure it will be a great addition to the SD15 when it gets released in the 59th century ;-)
One nice thing (and common sense if you ask me) is that they are now offering the OS version to the body-stabilized mounts (Minolta, K-mount) which is a smart decision as it gives the photographer of these mounts TWO stabilization choices instead of one. So you can chose the best option depending on what you are shooting, which focal length, and which DSLR you are using.
The lens is now available for pre-ordering at Amazon for $450 in the aforementioned five mounts. This is not a bad starting price, as its non-stabilized predecessor goes for around $370 to $400, depending on mount, and it is f2.8-4.5, instead of f2.8-4.