@ Bill Tang,
I think that as soon as CuteSoft has the ability to make a realistic statement about the final release date, they will communicate this immediately, but... since your question hasn't been addressed, they can't make a promise like that yet.
From experience I know it's very hard to estimate the time that the solving of problems you haven't encountered yet.
Fixing a small software problem can take minutes but it could also take you hours, since the cause and an acceptable solution aren't always on the surface. Also could a solution to lead to unwanted side effects, which means that testing if the problem is solved isn't enough.
Pressing for a firm date will result in either a promise which won't be met or a release on the promised date, which doesn't meet the quality you expect from a Release version.
Just help the CuteSoft team by testing the beta and providing them with clear feedback.