Diamond ROM based on Android 4.4.4 which is also known as Kitkat is available for the Samsung Galaxy Tab 10.1 and it is stable and solid as rock. It is basically a light weight and modified AOSP ROM.
-Flash TWRP for Galaxy Tab 10.1 (you can flash twrp over cwm from cwm if you’re in that situation)
-Reboot into TWRP recovery as only this way you can install custom ROMs on it.
-Make recovery backup (optional)
-Run Titanium Backup (highly recommended)
-Format system partition
Here are Android 4.4.4 Kitkat ROM features
CM Calculator (the newly redone one they’re proud of)
CM File Manager
Nano text editor
Koush’s full featured open source superuser (and it is integrated into settings )
Carbon rom blue balls wallpaper
Cyanogenmod port of 2 column settings adapted to Omni rom.
Omni floating window