FEATURES
Real Clean Shared Memory VM Cache Buffering based 256MB System Highest Performance
6x Different Packages: Update only what you need do a Full, Lite, Xtreme or Multi-Patch Update.
CM3 833 with 96MB Free RAM test on Lite Package
15x 3D Wallpapers and 3 Based on HoneyComb 3.0 Theme
14x Live Animated Wallpapers 2 Based on HoneyComb 3.0 Theme (not available in the Full Deluxe Version Only)
Full Screen HoneyComb Boot Animation
HoneyComb Mod AlarmClock and Clock by your's truly
HoneyComb Mod Meridian Pro by your's truly;
HoneyComb Mod Browser
HoneyComb Mod Calendar
HoneyComb Mod Contacts
HoneyComb Mod Gallery
HoneyComb Mod Camera
HoneyComb Mod Pictures
HoneyComb Mod LiveWallpaper Picker
HoneyComb Mod LiveWallpaper
HoneyComb Mod Mail
HoneyComb Mod GMail
HoneyComb Mod Settings
HoneyComb Mod Launcher DOCK V15
Hand Selected Rooted Tweak Tools Provided to Improve Performance
Apps to get your started
Media Replacements for Video/Music (Meridian Player) and Photos (QuickPic is use for Photos manually installed)
GUI (Graphic User Interface) Designed Closly Modeled after HoneyComb 3.0
Status Icons High Quality
Translucent High Quality Graphics
Main Clock is White instead of Black
HoneyComb Left and right arrows for volume control
So much More with each new update or patch your choices and experiences will be different!

WHAT'S NEW IN HCV12.0 B18
LCD Density increased by 5% to fix the RES/VIS issue
Ditched Audio Enhancements in B17 caused issues with GV
Locked RAM Cache Buffers in VM (Real RAM) Improve overhaul speed
Added Video Enhancements to Improve Screen Refreshs for Smoother Game Play
Added/Replace and reprogrammed tablet to best experience
Other things not mentioned at this time.

Source:
http://androidtabletzone.the-talk.net/t2706-rom-honeycomb-21-update1-tc21-hcv120-b18-for-7015-7015a-51311