Built on 1031 stock firmware (which is the newest as of 11/6/2012). Honestly not sure what changes PiPo has made although it does feel a bit smoother. We have made some major changes of our own though!

Changes Made vs. Stock
-Rooted
-Expanded app partition to 2 GB
-Build.prop mod for improved market (based on SGH-I777 Samsung SGS II which has the closest chipset to the RK3066)
-Permissions modification for improved market
-Removed useless apps
-Added root explorer, superSu, videoediter, gallery with picasa support, sweet Asus weather widget, docs2go, ESfile Explorer, Genie Widget, english dictionary fix, Signal Booster
-Improved launcher (SO MUCH SMOOTHER! Stock JB launcher that we use on our M1 releases)
-Prettier and simpler boot animation
-Fixed MicroSD card issues! Thanks to Tablet_Modder Here at FMA for his permissions fixes!
-Left the stock ebook reader and shelf widget in the firmware per the requests of some other users!