Leica announced a price increase for their 6-bit coding service of M lenses from $240 to $300 and is now also offering 18 months certified pre-owned warranty for an additional $50. The price of lens calibration remains $150.
You can contact Dale Photo & Digital for any of the above listed services. The new pricing will take effect on December 1st, 2012. List of lenses that can be updated with 6-bit coding can be found here.