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There are reports of two new third party lenses for Nikon F-mount expected to be announced in the next few weeks: Sigma 100-400mm f/5-6.3 DG DN OS: The lens should be announced soon, probably in the next 1-2 weeks Update: this lens may not be available for Nikon F-mount Tokina ATX-i 11-20mm f/2.8 CF (pictured above):