Carenado releases the Service Pack 1 for their C90. In order to access and download this SP, you must be a registered user and log into your account on the Carenado site. Here is the changelog:
This is a cumulative service pack.
YOU DON´T NEED THIS SERVICE PACK IF:
-YOU DOWNLOADED THE AIRCRAFT AFTER APRIL 17, 2012 AT 1920 GMT OR
THIS SERVICE PACK:
-Reality XP GNS430 integration.
-Barber pole function.
-Startup screen of EFIS.
-Traffic display in Avidyne.
-Prop animation effects
-Pitot heat operation.
-Starter and shutdown sound of right engine.
-Right propeller disc disappear when left engine was off.
-External lights effects when flying in fog.
-Crash to desktop situation due to a dll file.
-Replace EFIS document (the former had mixed some pages).
-Squared beacon light when viewed from afar.
It also fixes some minor visual and operating bugs found.
You can read more in the Carenado C90 forum here on AVSIM.