Just to clarify, XenForo 2.0 Developer Preview 10 is currently still available. It doesn't necessarily need an active license, but your license expired before that version was released, so you don't have access to it. We treat alpha/beta/RC releases slightly differently in that we don't keep previous versions available.
XF 2.0 is on track for a release this year so if you were to renew your license now you would be able to download the stable version of XF 2.0 when it is released, as well as getting access to the Preview version and then upcoming public Beta once it is released.