The Sony Xperia Z2 Tablet has received ClockworkMod-based Recovery and Root. The Touch Recovery is built from CWM 18.104.22.168 sources. XDA guru DooMLoRD has posted all of the details in the source link below, including instructions and download links.
The main requirement to install this CWM-based Recovery is to have an unlocked bootloader. At the moment, it only works with the 16GB Wi-Fi tablet version (SGP511). DooMLoRD has also posted instructions on how to root the tablet, which requires you to flash the kernel from the source link.