Sounds like a plan to me!
I know this plan is just roughly points on how and when things will be in the game, but I think/hope there is more to each line described in the plan.
And I am sure the devs will try and keep this plan up to schedule, but if it's needed, I sure hope they will take their time to do things right, and adjust the plan accordingly so the community knows what's going on etc.
Finally, when the release is comming, they need to be sure Naval Action is ready for a release, bugs, content, gameplay, mechanics, graphics, UI, sounds and music, etc etc etc. And that this is a game, wich keeps players playing and have different kinds of things to do in game like PVE, various missions, Port Battles, economy, trading, exploring, conquests, maybe even a story line, things that players would keep on playing to achieve, and maybe even a map-win for reset etc.
Good stuff anyways!