Estimated Priority cutoff Dates for NEPAL after the Bill becomes Law.

In 2012,
EB2---Cutoff Date will be 01 Oct 2011

In 2013, 
EB2---Cutoff Date will be 15 Dec 2011

In 2014
EB2----Cutoff Date will be 01 Jan 2012

In 2015

EB2---Will be First In-First Out

So if you file your Green Card now, you might have to wait another 4 Years under EB2.