Just a few answers...
No one outside the carrier knows when a particular version will be officially released. As soon as it is, you will find it here. Running the CrackBerry Memory Optimization Procedure is an excellent step to take, to free up memory and to get ready to upgrade.
You have a choice of Opera Mini or the native BlackBerry Browser. If you use the native Browser, check all the boxes in Options / Browser Configuration. "Support Style Sheets" is critical for the wapforums pages to display properly.
I you have recently gotten your phone then having a look at the 101 lecture series in my siganture will help you become more familiar with your phone.
It i not reccomended to try an upgrade until you are reasonable familiar with the phone, the process and the terminology. This last is so that people here can walk you throuhg a recovery process should it be neccessary - hope it's not but, it does happen.
It's been said already but descriptive thread titles really do help, thanks.