Harsh response from an Ambassador to a newbies first ever post...
As harsh as it may be, people should really learn to prioritise searching for the answer rather than asking for it and adding a whole new thread.
Some of us are pretty tired of opening this part of the forum and seeing the same question asked over and over again.
Hey Uma and welcome to Crackberry forums. The answer to your question is that there has been no official date set by BlackBerry but there are many rumours suggesting the 19th of February. Also note that is the date it may be released to your carrier, then you have to wait for them to roll it out...