I just want to remind all of you on forum and Red himself, that today is 24. August, just one week until end of the month. So august "Biomes" update comes, or is postponed for september? 
Expect a preview of the biomes update this weekend, from that point on, it requires a few weeks until the update goes live 
Definitely will be available in September.
alpha stage is supposed to be a stage of fast progress and experimenting.
That's true, but not every kind of progress is suitable for release. Apart from that, even though the game is in alpha, a lot of customers - especially on Steam - treat it like a finished or nearly-finished game. So it doesn't make sense to release every tiny new feature, even if it does not work and breaks your world eventually. I'm pretty sure updates shouldn't be buggier than they already are. In addition, releasing an update always consumes a few extra hours (upload it everywhere, make sure everything works, write an announcement, give support if it does not work etc), so if we publish every "experiment", development of the real important features would be much slower 
In my opinion, buying an early access game is not only to jump into alpha testing, you should also get something "in return". Unless you want to actively support development, you should only buy the game if you think its current state is worth the money. If it's too boring for you atm, wait one year until the game is in beta, if you already purchased it, you got it for a cheaper price at least. If you're too disappointed with the current state and don't think the game will be satisfying in the future, just issue a refund.
for a COMMERCIAL game being in alpha stage, the rate of hard, feature-adding updates has been ridiculous
That's your personal opinion (and of course you have a right for such an opinion), but please keep in mind that game development is a time consuming task, especially since this game has a pretty complex world. This is not a simple shooter, where adding a few more guns is done in no time. Since april, a lot of important things have been added to the game. You also have to take into account bugfixes and technical updates that happen in the background. In short, a complex technical background and multiplayer slow down the progress.
But now you have two figures of each CUSTOMER's money in your bank account
And a lot of this money has been put into new assets. For example, we hired an artist to rework and create new models for us. But even this requires several months until they're ready (and it's a professional artist, not some kid doing it after school), you see, game development and everything related to it isn't done in a few weeks or months 
it seems like this is just some silly hobby of yours
Definitely not true: I'm working in fulltime on this game (and I havn't had any holiday the last two years 
). But that does not mean "programming 8 hours a day". Conceptional design probably takes the biggest part in development, sometimes you have to discard some code when you find out it doesn't work as intended.
But also things like giving support etc can be VERY time consuming, even writing this post right now is costly in terms of time 
And you constantly "promise" updates and push it further, no wonder your names cannot be found on your website
What do you mean exactly? You find a legally valid contact in the imprint. About the promise of features, I doubt we told any lies in the past? I must admit, when it comes to any timeframes, we often need longer than expected (and I'm sorry for that), but if we have to delay a regular update, it's only delayed by 1 or 2 weeks usually.
This is the first time we're working on a huge update, but we said at the beginning that it will take longer than other updates.
Start developing like a commercial game should be developed, new experimental content, never mind if its' buggy for a while
Probably "developing like a commercial game should be developed" is subjective, what's your reference? Game development usually takes several years, even for AAA studios where whole teams work on it.
Especially in this case it's - as mentioned - a complex type of game, such games take some time to develop. If I compare the progress to any other comparable alpha game (that means, a game with a fully modifiable terrain, that's the crux), it's not that bad as all. Other commercial games out there have a much lower update-frequency, some of them haven't been updated in months 
Plus, we do most stuff on our own (apart from the engine, which is mainly used for rendering and scenemanagement), without using some out-of-the-box ready-to-use Unity-clicking-together features
I mean, I can partly understand it, as a gamer myself I also can't wait for new updates for the games I play, especially when it's an early access or work-in-progress game or mod. But especially since I know how time consuming these things are, I wait patiently (not always easy) 
Denke wir werden es aber zwischen das Biomupdate und das Wasserupdate schieben 
