According to some news tech site, ICS Updates for GS II were delayed. Samsung said that on March 10 will be the start of ICS updates for GS II but eventually they updated that it will be delayed.
Some GS II users were excited of these updates but eventually, they may get disappoint about this news. But Samsung told that they had already a expected date of release and they don't want to announce it publicly when it will be. Lets hope this update will release in a certain time.
Source: Samsung Buzz