Browsium Release Candidate available: time to put Internet Explorer Virtualization issues to bed?

Application Virtualization allows users to use potentially conflicting software in the same workspace. Towards the end of 2010 there was a great deal of discussion about the complexity of using application virtualization to finally let corporations end their dealings with the recalcitrant Internet Explorer 6.
In Virtualizing Internet Explorer: Microsoft takes the ball home and goes home we discussed why solving IE6 issues with Application Virtualization is difficult. Then, in December we reported that Browisum had crafted a lifeline and suggested a release date around the end of 2010.
To quote Robert Burns “The best-laid schemes o’ mice an’ men Gang aft agley”. Still, Browsium have announced the release candidate to their beta testers. With its release is it time to put IE8 compatibility issues to bed?