It seems IceFrog is working really hard, he needed only couple of days since Beta 9 to release 12-th version of Beta DotA Allstars 6.55 map.
Dota-Allstars 6.55 Beta 12 Changelogs:
-New item: Dust of Appeareance, gives true sight in a certain AOE
Item shops are in a different arrangement.
The paths into the towers is much much larger.
Waterfalls are in the back of base
-Scourge base: no change
-Magic stick now gives +20 channel
-Rhasta has +10 MS
-Rexxar the Battle Master’s Great Hawk no longer invis!
-Sentry wards now only last 3 minutes instead of 6 as before
-Sange / Yasha / S&Y recipes price and stats changed
-Sentinel Chimaera Roost shop is changed in model and name for “Ancient of Wonders”