Thanks.<p>I&#x27;ve found it&#x27;s a great soft deadline for being pretty feature complete and in a rough demo mode ahead of the launch. With analyst pre-briefings about 50% of the time the demo is ready and 50% it isn&#x27;t. Since they&#x27;re pre-briefings it&#x27;s usually a little friendlier so not as critical to be super fine tuned on it. As you get to analyst briefings and then to press briefings the demo and product being ready does become more critical of course.<p>If I&#x27;m that worried about schedule slip, I won&#x27;t start the process until everything is almost done. This then tends to create a greater push&#x2F;pull between launching and engineering so being at least within the ballpark on timing makes the push&#x2F;pull a bit easier.