the beta is simply not necessary. why put in something in even worse shape? read the forum of any beta brench. people get very upset about it. that´s simply not needed. sure you could say nobody needs to play it, but people are curious and try it. why would they drive people into it if not to use them as test subjects? all it does is to create an unnessacery amount of angry players.
and about their silence, i don´t expect them to go into detail but for almost one year all we knew was that they work on stability and and bugs. so many people didn´t knew what or if there is something more to expect. only lately, after almost a year they confirmed new content. and even when it´s more then obvious that they need more then a year to develop the game, they keep silent about it. at least some idea they must have, so why not share it. don´t expect a release date but a little bit of open communication can´t be that dangerous. they already missed their starting idea about when they could finish and nobody got angry about it.