within this month, I hope! That's an estimated schedule which is neither too slack nor stringent, allowing for some room to breathe should there be unexpected problems.
Our Project: WindLight team has been working onwards and upwards, squashing bugs and getting things in line for a First Look re-release, likely to follow the debut of Voice in the main viewer.
I've been using internal builds extensively myself. In a future phase, when sky settings become share-able assets, duly remind me to create a freebie pack of 'em. I will commit to it as gladly as I have my textures.
More soonish, yours truely will post to the Official Linden Blog with a jubilant announcement when WindLight has come back for your pleasure. Until then, enjoy s'more pictures I've taken. These are all raw and un-post-processed, taken "naked" from the viewer. 
Hey, that's good news because we all miss it
What I'd like to have though is a way to set a default preset for a sim because I personally probably know most how I think the sim should look. Surely it should be overridable as it is now but having a default would be great. After all not everybody is into adusting sky prefs.
Hope this will be added soon, too
Beside that keep up the great work on it
Whee! Still can't wait, but fix the "re-teleport-after-teleport-done" bug first :(.
@Tao: Yeah, so, for example, a space sim could be always space, and not "earth" suddenly because a user selected the "earth" WindLight preset.
Is there a list of planned features, a soft timeline or intended order for the various windlight features? I know none of them are promises
but I'm so itching to play with these…
Oooh, voice on the main viewer would be nice. LOL.
Well, voice is probably coming quite soon as they said that the actual first look will be the last one. I also wonder if windlight FL will come when voice first look will not be necessary anymore.. but who knows, maybe it's 2 FLs then.
@smiley: I think the user should still be able to select what he wants but it should work like Sunsite/sunrise etc. now, just use the default unless the user really wishs to change something.
How utterly broken will it be this time?
@Tao: The intent is to first replace all the current day cycle control features, including setting a sunphase from the default day cycle for a region. Then, custom skies (meaning ones you modify yourself) should be settable region-wide, along with treating sky settings as inventory (which I'm so fond of mentioning nowadays).
@Smiley: I abhor that "double teleport screen" bug and we do have a solid repro for a related one, https://jira.secondlife.com/browse/SVC-438 which you may want to vote for. Our devs are working on many other bugs but I will keep bringing this particular issue up.
@Spikez: Out now of course! http://blog.secondlife.com/2007/08/02/the-second-life-voice-viewer-is-live/
@Storm: Internally, yes. I think I can share more in my First Look: WindLight re-release announcement when that comes out.