Rayqual announced a new Micro Four Thirds adapters with built-in tripod mount for Leica R lenses:
B&H just started selling a new Micro 4/3 to Leica M lens adapter from Dot Line for $99.95.
Voigtlander offers a similar M mount adapter for $179:
Amazon sells a Fotodiox MFT to Leica M lens mount adapter for $29.95:
The cheapest solution seems to be the Rainbowimaging MFT to M mount lens adapter with a price tag of $26.99:
The most expensive adapter is from Novoflex - $269.99: