Tamron 17-28mm f/2.8 FE preorders:
In the USA at BHphoto, Amazon, FocusCamera, BuyDig and Adorama.
In Europe it’s available at Amazon DE, Calumet DE, WexUK, Park UK, Amazon IT, Amazon FR, Amazon ES, CameraTools NL.

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Marc Alhadeff tested the new 17-28mm FE lens and writes:

The Tamron 17-28mm F2.8 Di III RXD (1000 euros) is an excellent complement to the Tamron 28-75mm F2.8 Di III RXD, it offers very good/excellent performances at 2,5 times less the price of the Sony FE 16-35 mm F2.8 GM (2700 euros)
Obviously the focal range is smaller , but if you have the Tamron 28-75 it complements it without any overlap (like a 16-35 GM is overlapping with the 24-70GM)
Bokeh and color rendition are very good and similar to the 16-35 GM
Sharpness is very good to excellent and similar to the 16-35GM. The Sony 16-35mm is however better at 24/28mm at F2.8 in the corners (only visible on 42 / 61 Mpix )
If you do a blind test on a 24Mpix camera like the A7III you won’t see any difference This is excellent for a lens at 1000 euros i.o. 2700 euros !
Compared to the Sony 16-35 F4 Zeiss Vario Tessar (1100 euros), the Tamron delivers better performances
Globally an excellent Price/Quality ratio, Highly recommended

Pros
Price
Lightweight and small
Very Good to excellent sharpness
Very good AF
Limited distorsion and vignetting
No CA
Very good blurry background and Bokeh
Very good color rendition

Cons
Limited range : no 16mm, need to switch lens to 28-75 to reach 35mm
24/28mm corners performances wide open are a little bit lower than the rest of the range

More new 17-28mm FE tests:
Comparison with Tamron 17-28mm and Sony 16-35mm f/4 at Admiringlight.
Image samples shot with the new A7rIV by ThePhoBlographer.
Japanese tests at Asobinet and DC.watch.

ePhotozine published their full 135mm GM review. The conclusion:

The Sony FE 135mm f/1.8 G Master is indeed a very impressive lens. In terms of design, ergonomics and performance it cannot be faulted. It is expensive, and that is really the only downside to a lens that will produce the goods and offers the potential of a very long service life.

A superb choice for Sony FE mount full frame users and as such Highly Recommended.

The real one big issues with this lens is that it’s not in Stock anywhere :)

Preorders: Sony 135mm GM at Amazon, BHphoto, Adorama and FocusCamera. EU at ParkCameras, WexUK and Calumet DE.

If you want to know which is the best “light” tripod ccheck out this new Dpreview test. they compared these four:

Gitzo 1545T (Amazon, BHphoto, Adorama).
Peak Design Carbon Fiber Travel Tripod (BHphoto, Adorama)
Manfrotto BeFree GT (Amazon, BHphoto, Adorama).
Surui N1204SK (Amazon, BHphoto, Adorama).