As you can tell from just about every other photography-related blog/news site, Nikon announced these two beauty's pre-PMA today. There are a few reasons these lenses are significant:

• First, they're both designed for FX bodies - full-frame. Sure, you can use these lenses on DX bodies, but you won't get that ultra-wide 16mm, it'll be 24mm (16 x 1.5 = 24). There will always be a place for DX bodies and lenses (sports, wildlife, events that need long tele coverage) and I think it's safe to say that they'll be around for quite a while - at the same time, it appears that FX bodies and lenses are beginning to expand, for good reasons.
  
  
• Second, both lenses compliment Nikon's behemoth 14-24 mm f/2.8. The 16-35mm f/4 isn't as wide, but zooms in further - that can be especially useful in our line of work. The 24mm f/1.4 is a prime, meaning it's more than likely (there are no lens tests yet) going to deliver the sharpest image of them all at 24mm. 
  
  
• Third, since both lenses are built for FX bodies, it's a good chance we'll be seeing an updated Nikon full-frame body at PMA. Well, maybe I'm just wishing out loud…