I know, that's the problem, it does get your hopes up when the QA's pop into a bug thread. It doesn't have any implications of time though, just means that the bug is on their list, along with all the others.
The QA's on twitter always respond with something along the lines of 'we are aware of this issue, thank you for the additional report'. Same deal, not an indication of a fix in any time frame, just an indication that at least the bug is on their to-do list!