It seems the first update/patch for Flight Sim World will be available during the week. It will contain several corrections and improvements based on the community feedback, as well as normal continuous development.
Quoting the original message from Cryss, one of the DTG community managers:
Last week we launched Flight Sim World into Early Access, and hopefully you've spent the weekend enjoying the first step for FSW.
Since then we've been on the boards, scouring the reporting forms and gathering feedback to compile a hit list of immediate fixes with an update planned for later this week:
Addressing brightness issues on runways
Improved lighting on autogen buildings and AI aircraft
Improving lighting on the horizon
Translation fixes in the UI for German & French
Music tickbox is now ticked when music slider at 0
Quitting a lesson now returns to lesson screen
Disabled state option implemented in repeat dropdown in Key Assign Panel
Livery of the aircraft in Scud Runner mission changed to reflect UI
Heavily revised audio for both PA34 and PA46
Momentum effect applied to all aircraft default cockpit views
Additionally we're aware that some users have been affected by optimization issues, whilst fine tuning performance will be an ongoing process throughout Early Access, we're looking particularly at sub-par performance on high-end machines. If you're a user affected by this, then feel to contact the support team at dovetailgames.kayako.com. We also have a number of suggested tweaks that may improve your flying experience:
Lower the display setting sliders - Scenery and Traffic tend to be the largest offenders. If you're experiencing performance issues, we recommend setting Scenery to mid-high and traffic to low.
If you’re experiencing performance problems in Full Screen Mode - particularly if you're using a multi-monitor set up. Set your profile to run in window mode or windowed full-screen.
Disable concurrent Streaming (either broadcasting or viewing)
We're grateful for any constructive feedback about Flight Sim World and have a host of improvements for next week (including hot fixes to a number of aircraft, their instrumentation and tweaks to the flight model) and larger updates planned in the near future. Don't forget that if you've experienced a bug then please fill out our Reporting Form.
Since the game is on Steam, you won't have anything to do to receive that update, excepted ensuring your Steam is running (mine starts with Windows ).
Steam will automatically detect the update, download and apply it for you.
Be aware that this update may overwrite some of the FSW files you had modified or tweaked in the past days. For example the FSW.cfg or the scenery.cfg, or if you overwrote some default textures (clouds etc...) stuff like that