>What support does SoundCloud's new single-page interface have for IE8 and IE9?
For IE9: some. Backbone automatically detects pushState availability and fallsback to a hashbang system allowing the SPA to work.
For IE <= 8: none.
> Is there any data on how much SoundCloud's transition to a single-page interface decreased latency during navigation relative to the traditional page-loading model?
Not yet, but that would definitely be a metric we'll be collecting. We're still working very hard on increasing the performance, so it'd be a moving value right now.
> I tried to sign up for the beta but the party was full
No worries -- you're in the queue and we're gradually expanding the rollout, so you'll get an email soon. For everyone else, you can join the beta by signing in at http://next.soundcloud.com
For IE9: some. Backbone automatically detects pushState availability and fallsback to a hashbang system allowing the SPA to work.
For IE <= 8: none.
> Is there any data on how much SoundCloud's transition to a single-page interface decreased latency during navigation relative to the traditional page-loading model?
Not yet, but that would definitely be a metric we'll be collecting. We're still working very hard on increasing the performance, so it'd be a moving value right now.
> I tried to sign up for the beta but the party was full
No worries -- you're in the queue and we're gradually expanding the rollout, so you'll get an email soon. For everyone else, you can join the beta by signing in at http://next.soundcloud.com