It must be good lens, especially for fast run and gun, and cheaper than Panasonic.

Relying on the Tamron 14-150mm filter size, 52mm, that is 10mm smaller than one of the Panasonic lens, the maximum aperture (speed) of the Tamron's lens should decline fast from f/3.5 to 5.8 with the zoom focal length. Nonetheless, it is small and light, and --if its price is right while quality is decent-- the lens might be quiet popular as a "general all purpose zoom".

AFC performance? Parfocal lens? Let's wait and see.

I don't see the point. Maybe a year ago when price of Panasonic 14-140mm was high...now always available new for under $600 on ebay.

Now a 12-120mm f4 would really get my attention...

For same weight as Oly but have VC that is pretty appealing for general travel lens

Anyone see this lens at NAB? This lens seems very appealing. Looks like it has a very smooth zoom function.

I haven't heard anything since the lens was announced in January.

I do not remember precise release date, but must be available in summer time, if I remember correctly.

Tamron USA, Inc. announced the price and delivery of its first All-In-One™ high power zoom lens designed for Micro Four Thirds mirrorless interchangeable-lens cameras. The Tamron 14-150mm Di III (model C001) will be available in the USA starting June 26, 2014 at $589.

For the past 22 years since Tamron released to the market an extremely practical high-power zoom lens (28-200mm Model 71D) in 1992, the company has endeavored to continually develop high-power zoom lenses. By actively using its long-cultivated technology, Tamron has successfully developed an epoch-making compact and stylish, high-power all-in-one zoom lens that will further accelerate the attractiveness of the Micro Four Thirds cameras in the market.

When the development of this model was originally announced in January 2013, the lens was slated to feature built-in VC (Vibration Compensation). However, a series of deliberations and discussions over the course of the development process resulted in the removal of VC functionality.

• Employing one LD (Low Dispersion) glass element, two AD (Anomalous Dispersion) glass elements two Molded-Glass Aspherical elements and one Hybrid Aspherical element, Tamron's new Micro Four Thirds high-power all-in-one zoom lens delivers leading-edge image quality by reducing aberrations to a bare minimum
• The ingenious optical design achieves a compact body with a filter diameter of just 52mm.
• A stepping motor that is optimized to match this model provides silent, quick and accurate auto focusing.
• The metal lens barrel exterior is available in two colors: black and silver, providing the most popular color options to match high end cameras.
• Using a circular diaphragm, this lens achieves spectacular background blur effects.

$590 and no OIS. Huh.

http://www.dslrmagazine.com/pruebas/pruebas-tecnicas/tamron-14-150-mm-f-3-5-5-8-di-iii-rendimiento.html

It's a great walk-around lens for times when you simply want to go out and take pictures but also has plenty of scope for shooting sports action and close-ups of wildlife.

It's small enough to fit in a handbag or large jacket pocket when attached to an OM-D camera (particularly the E-M10). And it won't take up much space in a regular camera bag.

http://www.photoreview.com.au/reviews/lenses/m4-3/tamron-14-150mm-f-3.5-5.8-di-iii-m4-3-lens

http://www.photographyblog.com/previews/tamron_14_150mm_f_3_5_5_8_di_iii_photos/

http://www.digitalversus.com/digital-camera/panasonic-lumix-cm1-p21712/preview-panasonic-lumix-cm1-undergoes-our-tests-n36557.html