Photographyblog posted the full GX8 review:

In summary, the Lumix DMC-GX8 is another great compact system camera from Panasonic, but the new sensor and dual image stabilisation system aren’t quite as revolutionary as advertised, and the larger design and crucially higher price-point also detract from what is otherwise an excellent, but not exceptional, camera.

Richard: “I’ve updated my GX8 full review to include more information about custom function buttons, shutter shock, and also a little video about why i think the GX8 is the best digital camera I’ve ever used for manual focusing: photobyrichard.com/reviewbyrichard/panasonic-lumix-gx8-review”

Soo: “I just wanted to share a little detail concerning the recently announced Panasonic GX8 and the kit lenses sold with it. I discovered on some french review websites that the GX8 will come with a refined version of the 12-35 f/2.8 with a matte black finish (as Panasonic did with the 14-42 II, 45-150 and 14-140mm) :
” Notez toutefois que si le zoom Lumix X Vario 12-35 mm f/2,8 ASPH (dont une version intégralement noire mate arrive très bientôt “
source : http://www.lesnumeriques.com/appareil-photo-numerique/panasonic-lumix-gx8-p27471/prise-en-main-lumix-gx8-premieres-photos-en-conditions-reelles-n44105.html
Maybe a matte black version of the 35-100mm on the way too ? I don’t know but it can be expected :)”

Preorders:
Black GX8 at Amazon, Adorama, BHphoto and Panasonic. In Eu at WexUK.
Silver GX8 at Amazon, Adorama, BHphoto and Panasonic. In Eu at WexUK.
FZ300 at Amazon, Adorama, BHphoto and Panasonic.

Photozone (Click here) published the full [shoplink 54790 ebay]Kowa 8.5mm MFT lens[/shoplink] review:

Now while the lens is certainly good, it stays somewhat short of this expectation at least. The center quality is great and the borders are also very sharp at mainstream settings. The extreme corners aren’t quite as convincing though. They are downright soft at f/2.8 and it’s a good idea to stop down to f/4, better f/5.6 where the results are decent. The vignetting is also higher than usual especially at f/2.8. A downright stellar performance is the lack of distortion – probably the best ever measured quality here and we are talking about the native characteristic and not about a digitally corrected result.

The Kowa Micro Four Thirds lenses on eBay:
8,5mm f/2.8 in on [shoplink 54790 ebay]eBay (Click here)[/shoplink].
12mm f/1.8 in [shoplink 50867 ebay]Black (Click here)[/shoplink], [shoplink 50868 ebay]Green (Click here)[/shoplink] and [shoplink 50869 ebay]Silver (Click here)[/shoplink].
25mm f/1.8 in [shoplink 50870 ebay]Black (Click here)[/shoplink], [shoplink 50871 ebay]Green (Click here)[/shoplink] and [shoplink 50872 ebay]Silver (Click here)[/shoplink].