In my opinion this free upgrade is very good. I know many of us hate STM (including me) and I know that when we are upgraded to 10Mbit we will still be throttled.. but the thing is, the lowest speed we would get throttled to is probably 2.5Mbit/s. That is still faster our full connection speed that we have now!
Basically, for heavy downloaders, just think of it as slightly better speed than you have now without STM
