This page contains all information regarding the Flex SDK upgrade to Adobe Flex 4.6, and the addition of the swf11 runtime to the LPS.
As of July 18th 2012, the SWF11 runtime feature has been checked into a new OpenLaszlo branch. Therefore it's not needed to to apply any patches to trunk to build your custom version of OpenLaszlo with SWF11 support.
http://svn.openlaszlo.org/openlaszlo/branches/flex4.6/
The nighly builds of OpenLaszlo flex4.6 branch can be found here:
http://download.openlaszlo.org/nightly/flex4.6/
Raju Bitter has created two Google Docs, a "Flex SDK Upgrade Guide", and a spreadsheet describing the file changes. The document can be found in the files section of this team space:
http://www.assembla.com/spaces/openlaszlo-community/documents/tag/swf11
The "OpenLaszlo Flex Upgrade Guide" can be used to upgrade OpenLaszlo trunk to a version with Flex SDK 4.5.1 for the swf10 runtime, and Flex SDK 4.6.1 for the SWF11 runtime. The necessary scripts to execute the upgrade (can be applied to OpenLaszlo Trunk 5.0) can be found here:
https://bitbucket.org/rbitter/openlaszlo-flex-upgrade-scripts
TODO: collect feedback from community members testing the SWF11 runtime.