As previous rumors said, Sigma will announce their first full frame E-mount lens sometime in 2017. According to recently rumors on SAR, first Sigma lens will be Sigma FE 35mm f/1.4 AF lens or Sigma FE 35mm f/1.2 AF lens. And two Sigma FE lenses will be coming this year, the second lens could be a Sigma FE Zoom lens.
Sony Lenses
Sample Images: FE 12-24mm f/4 G & FE 16-35mm f/2.8 GM Lenses
Sony today announced two new wide-angle zoom FE lenses, the FE 12-24mm f/4 G Lens (B&H Photo/Adorama) and FE 16-35mm f/2.8 GM Lens (B&H/Adorama). The US price for FE 12-24mm f/4 G lens is $1,698.00, will be shipping in July, 2017, the US price for FE 16-35mm f/2.8 GM lens is $2,198.00, will be shipping in August, 2017.
Sony Announced FE 16-35mm f/2.8 GM Lens (Price $2,198) & FE 12-24mm f/4 G Lens ($1,698) !
According to SonyRumors.co, Sony now just officially announced two new wide-angle zoom FE lenses: The Sony FE 16-35mm f/2.8 GM Lens (B&H/Adorama) and Sony FE 12-24mm f/4 G Lens(B&H/Adorama). The US price for FE 16-35mm f/2.8 GM lens is $2,198.00, will be shipping at the end of August, 2017, Sony claims this lens offers better sharpness and smoother bokeh than Canon EF 16-35mm f/2.8L III USM Lens. The US price for FE 12-24mm f/4 G lens is $1,698.00, will be shipping in July, 2017, this lens is rather small, even fit on some APS-C mirrorless cameras.
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Sony a9, FE 100-400mm GM Lens now Available for Pre-order in US and UK !
The Sony Alpha a9 (Amazon/B&H Photo/Adorama) full frame mirrorless camera and FE 100-400mm f/4.5-5.6 GM OSS Lens (Amazon/B&H Photo/Adorama) now available for pre-order at most stores in USA and UK. The Sony Alpha a9 is known as DSLR Killer, the US price for Sony Alpha a9 body is $4,498.00. The Sony Alpha a9 will be shipping on May 25, 2017, and FE 100-400mm f/4.5-5.6 GM OSS Lens will be shipping on July 31, 2017.
Sony Alpha a9 Reviews, Hands-on Previews, Sample Images, Videos Roundup

Here are some previews, reviews, sample images and videos about the new announced Sony Alpha a9 full frame mirrorless camera. This camera will be available for pre-order tomorrow at (Amazon/B&H Photo/Adorama).
Sony Announcement on April 23, New Full Frame Mirrorless Camera and FE Lenses
According to recently rumors around the web, Sony will have a new product announcement on April 23, 2017 next month. There will be plenty of new cameras, lenses rumored to be announced on that day.
Sony Rumored to Announce FE 100-400mm G Lens Next Month

According to recently rumors on SAR, along with new Sony full frame mirrorless camera, a new FE lens Sony FE 100-400mm G lens is rumored to be announced in April, next month. It will be the first full frame telephoto zoom lens for Sony full frame mirrorless cameras. This new FE lens is currently in developing by Sony.
Sony FE 100mm f/2.8 STF GM OSS, FE 85mm f/1.8 Lenses Officially Announced !
Sony USA today has officially announced two new mid-telephoto prime lenses for Sony Alpha full frame mirrorless cameras. These two lenses are Sony FE 100mm f/2.8 STF GM OSS lens and Sony FE 85mm f/1.8 lens. The FE 100mm f/2.8 STF GM OSS lens costs $1,498.00, and FE 85mm f/1.8 lens costs $598.00, will be shipping in March, 2017.
Sony to Announce a “budget” 85mm FE lens in 2017
According to recently rumors, Sony is planning to announce a new cheap (budget) full frame E-mount 85mm lens in 2017.
Sony FE 85mm f/1.4 GM & FE 50mm f/1.8 Lenses DxOMark Tested
DxOMark has just tested two Sony FE lenses today, the Sony FE 85mm f/1.4 GM lens (B&H | Amazon | Adorama) and FE 50mm f/1.8 lens (B&H | Amazon | Adorama). Both are tested on Sony Alpha a7RII, the FE 85mm f/1.4 GM lens performance even better than Otus lens tested on Nikon D810. And FE 50mm f/1.8 lens is an affordable standard prime lens for Sony a7RII.