Panasonic has published a page with the S-Series (L-Mount) lens roadmap including lenses from Panasonic, Leica and Sigma. This is a great page to bookmark.

Many of the lenses listed are already shipping; this is, it appears, meant to be a list of shipping and at least some upcoming lenses (I can't confirm if this is all publicly planned lenses). The layout isn't super clear… there are lenses listed in text that aren't in the chart, but here's what I've gathered is coming:

• from Panasonic…
  • 24mm f/1.8 (ooooh)
  • 50mm f/1.8 (so a lower cost nifty-fifty, as compared to the already shipping 50mm f/1.4)
  • 85mm f/1.8 (perfect portrait lens)
• from Leica…
  • 21mm f/2 SUPER-SUMMICRON
  • 24mm f/2 SUMMICRON
  • 28mm f/2 SUMMICRON
• from Sigma…
  • 16mm f/1.4
  • 30mm f/1.4
  • 56mm f/1.4
  • 70mm f/2.8 Macro

Lenses we've already heard about from Panasonic but I haven't personally touched yet include the 24-70/2.8 and 70-200/2.8 (rounding out that very common, very desirable focal length / aperture combo)

It's also worth pointing out that Sigma already has available for pre-order the MC-31 PL to L-Mount adapter for those cinema lenses you've always dreamed of using ;-) 

Visit the Panasonic L-Mount Roadmap page

What lenses are you looking forward to the most? What lenses are you still waiting for?