According to Major Nelson's latest podcast, the Xbox Live Team is working towards making a harder, better, faster, and indeed stronger Xbox Live Dashboard for the next update later this year.
Some of you have taken issue with the slow speed of the New Xbox Experience, and Major Nelson and the rest of the Xbox Live team have taken notice. In his latest podcast, the Major promises that the next major dash update will see a much faster guide. Just don't call it a performance enhancement, whatever you do.
"The team has done some really good stuff around making performance enhancements. 'Performance enhancements' doesn't sound right because it sounds like we're going to give the guide a little blue pill, and we're not doing that. Whatever we call it (and it's not going to be called the NNXE), but whatever the next version of the dashboard is called, it's better with a lot of very cool new features. That update will be out later this year"
Thank goodness, because if the Xbox Live team had released a dashboard update that was worse in every way, they'd be Vista team, and they keep the two separate for a reason.