It seems new lenses for PL mount will be announced soon:http://blog.fdtimes.com/?p=1085
Andreas Kauffmann is the current owner of Leica Camera. Leitz and Leica Canada do not exist anymore. I don't know if the designers were previous workers of Leica or if we have to interpret Leitz as Leica Camera. I don't know if these lenses will be labeled "Leica" or not.
"Leica" brand is currently owned by "Leica Microsystems", based in Wetzlar, Germany. Leica Camera is a different company, based in Solms Germany (a few kilometers from Wetzlar). Leica Camera uses the brand "Leica" under license.
Leica Camera, Leica Microsystems and Leica Geosystems were the same company, but it was split in three separate companies years ago.
The new lenses are associated with this Wetzlar company (you can read "Leitz-Park"):Home - CW Sonderoptic
The company is mentioned in Leica's last annual report, in which you can read "cooperation agreement since April 25, 2008".