Estimation is much harder than you think it is. As a general rule, I don't do estimates for modding projects. Even if I did predict how much work it would take to complete a given feature, I have no possible way to estimate how much time I'll have to work on it. So any estimate for a release date would be completely imaginary. This isn't my job. I don't have to stick to release schedules.
With all due respect to your modding abilities, that's splitting hairs. Even if you don't know how much time you'll have to work on something, you already have years of general modding and a year of continuous development to extrapolate from. There's also a major difference between saying "I will release this on Valentine's Day, February 14th" and saying "We finished working on feature X, and now we only have problems Y and Z to solve—something that will probably take at least 2 to 4 months at our current schedule". As a former software developer, I very well know how hard estimation can be, but I haven't worked on a single project in my life—software or not—without having at least the most general idea about how much time I expected it to take (as opposed to its real time frame, which could take much longer for a number of reasons, of course). Again, this is not a personal jab, but as general rule of thumb, if one can't honestly estimate if their project will take a month vs a year to reach beta, something is usually suspect.