At the end of the week Sony Mobile announced the release of AOSP source for the Xperia Z tablet and just hours later it was already running a CyanogenMod 10.1 nightly version as codeworkx (Daniel Hillenbrand) showed it booting up on the device.
A couple of days later, today, the Sony Xperia Tablet Z gets a whole working CyanogenMod ROM, no more nightlies its RC2. Users can now flash CyanogenMod 10.1 RC2 on their Xperia Z tablet.
Download links available here.
P.S. Google Apps not included in the ROM but you can get them from here.
source codeworkx Google+