from what others have said it will update on wednesday but you wont pay new saleries until the following wednesday

Most likely, we will pay the new salaries on the Wednesday of the change. I believe the only time we didn't pay the new salaries on the day of the change was when they revamped the salary structure a couple of seasons ago.

This is a perfect example of a thread that could use an admin comment to clarify the question

Hi everybody. These are some facts and hints for the offseason in general.

What happens:

After last league game of old season the offseason starts.

Monday - friendly game
Wednesday - on this day all price money will arrive on your account. You will also see the result of the wages calculation, but they become active one week later. You will receive your trophy if you earned one. Your team will get moved to its new league, if your promoted or demoted
Friday - normal training
Saturday/Sunday - NO league game
Monday - friendly game
Wednesday - official switching to new season, new calculated wages become active, schedules are created for both league and regional cup / aflc
Friday - training
Saturday/Sunday - new season starts with its first gameday

Do I need to pay for facilities, maintenance, wages and staff during this offseason?

Yes, of course

When can I change my team name?

Normally between both offseason wednesdays, but check admins announcements / news for that

Are there any other games than friendlies in offseason?

No

When are the promised upgrades for the game itself available?

Check admins announcements / news for that, there is no fixed date for this

When can I select a new sponsor/Do I need to do so?

first friday in offseason, and you need to select one.

http://www.grid-iron.org/index.php?page=community&subpage=viewt&t=4627

yes, but the first wednesday is when they calculate em, and we can see ur players' new salaries and stuff