You hit a good point there. We are kinda left in the dark for the most part. We get a juicy tidbit now and then, but not much in the way of concrete information or release dates.
The only concrete thing we know right now is that, a) the back 9 is coming soon and b) there is supposed to be at least one set of clubs released at or around the same time. There's also been speculation of them opening up the Pro Tier which is somewhat justified because now you can select the Pro Tees in practice mode. 3 weeks ago you couldn't.
But that's about it. Mostly speculation and guessing. :(
Now if you want my two cents, I think we're gonna see a flood of stuff at one time, including stuff that no one has anticipated. It doesn't make sense to move this slow, releasing a single feature at a time. That leads me to think we're about to get something big dropped on us in the next month or so. But, that's a complete guess.