Yes and no :) yup, we don't need to tell everything and it is very organic, which changes time to time as well. However, the main goals are there always. That's why try to think of some unreachable goals, and putting yourself on the path towards it.

My take is to state some of them will do. Plus, no one really remembers what are your goals, it is more like a conversation between myself.

One more good point of announcing your goals is that some people may present you with opportunities as they are aware that you are making your way towards something. That may be a bonus :) which I found it useful too and happened to me.