Available at Noble Knight here.
Also available at the LotFP Webstore here.
Also still available from Sphärenmeisters Spiele here.
Available at Your Games Now here.
Available at RPGNow here.
(The previous issues concerning the PDFs have been resolved.)
Still waiting on it to arrive at Ludikbazar, but French fans should be able to order it there any day now.
The original shipment to England, made three weeks ago, still hasn't turned up, and that package didn't even have Grinding Gear in it, so not sure what's up there.
Arkkikivi should have copies shortly as well.