About the sideboards .. So i submit 60 cards deck that i can use in the swiss format , and until the sideboard deadline i just submit 15 more cards that can be used only in the top 8 ? and before each game at the top 8 i can switch cards from the main deck with the 15 sideboard cards i have submit?

You have to submit your sideboard with your main deck; you can't tailor your sideboard to what you know you'll face in the final rounds should you make it. You have to make a judgement call about what you think you're likely to face before hand.

You should play the first (and possibly second depending on what rules format we're following) game of each match with your pre-submitted deck. Then you can sideboard for each subsequent game.

i thought that the main deck deadline was different from the sideboard deadline to submit.Like you can see all the submitted decks and then you can submit your 15 cards sideboard for (if you make it) the top 8 . Did i missunderstand? i just notice after the change of rules that you have to submit both ok for that!Also kryder said it will be best of 5 games at the top 8. It will be better if you can add the sideboards after the first game of each match, cause if your deck is vulnerable against your opponent's deck , and you are allready losing 2-0 it will be difficult to come back even after the sideboards added at third game.Anyway just saying , hope i dont confuse anyone, im not that good at english

the rule says "Top-8 - The top-8 players after the swiss rounds will play single-elimination based off their record for pairings. The Top-8 players will be allowed to utilize the 15-card sideboard for use with their deck. This is best of 5 games" so maybe you can add them even in the first game.kryder will enlight us

As per standard tournament rules, first games are always played sans sideboard. Game 2 and beyond player may, but are not required to, utilize thwir sideboard.

All cards players wish to use need to be submitted by the end of the submission period, including sideboards.

lost 2 free wins.

We don't deserve you, Kryder.

I'm happy with that changes, building and testing 2 decks in such a short time is quite difficult and I was in doubt if
I even can participate, now this is a big relief and I can participate

I also was concerned with deadline for deck submission. But was also was bit excited, because shorter time would mean that everyone would need to predict meta, and it make deck building exciting.

How's everyone doing with predicting Amonkhet meta? control fest? aggro fest?

knowing control deck can sideboard all push, grasp, burn, sweepers, lifegain, graveyard hate, anybody still plays aggro?

Control decks have been hyper focused to stop aggro for the last two tournaments with minimal success. I don't even know what I would sideboard in that I'm not already maindecking.

Building for the top 8 is a good way to lose a lot during the swiss if you ask me.

No one did.

how should we evaluate the matchup between sideboarded esper/grixis control (all removals, censors, anything costs 4+ boarded out) vs sideboarded RB vehicles? Does RB vehicles stand a chance?

I think you mean boarded in.

If I board out all my removal, I feel like RB Vehicles is going to be pretty okay...

No one will see 5 colour monuments coming, i look forward to sweeping the meta

Thing is , you cant use sideboards until the top 8,so control decks and aggro decks have to figure out a good swiss of 5-6 rounds at first.Then its another story.Depends on how many control or aggro decks will be on top 8 and who is gonna be your opponent.Honestly many games depends on who is going to play first or/and who will have a good starting hand so i dont think you should be worried so much about others , better focus on your build and if you are lucky you will make it.

That's smart. Then your sideboard will literally every card available to you, so you can answer literally everything!

but my build depends on other builds...how do i focus on mine without a guesstimate right?
can i assume everyone wants to not only getting into top 8 but also win games with sideboards in? like, mono red T3 kill aggro can possibly get to top 8 but they can hardly win a single match after that, since everyone has sideboard lifegain and cheap removals? do i still have to prepare against mono red?

you can't build a deck that can be succesfull with every other deck even if you'd know every other deck in tournament.Talking to some big players from worldwide tournaments in real paper game told me that the plan must be "try to win" and not "try to avoid the defeat".i guess the best build is a balanced deck that can be competitive against both control and aggro or else just a deck that you like to play with and at least enjoy it.one way or another luck will be on top factors again

Definitely.
So let's look at the scenario shall we :
Lets say I'm RB vehicles, making a sideboard and thinking about what I would do with control. With Red black colors I have a few options actually. Predicting my opponent will probably take out all his counters/commit/memory , maybe a win con or two for lots of cheap removal - I could board in more PW. Another option is recursion and cards that replace themselves .. which we have quite a few options for in RB.
Hell I could even have a sideboard which makes my RB vehicles into a RB burn deck ( which is possible with 15 cards) which would absolutely destroy an esper control packed with cheap removal and no counters.

Of course if my opponent is good he has studied my sideboard and knows I could do all this stuff and predict that I'm predicting he will add in more cheap removal, so sideboards against my sideboard. but wait ! I predict he will do this and I just keep the deck the way it is - and this becomes a vicious cycle.

So basically its a game of rock paper scissors.

Have fun people.