Today the first stable release in the 0.8.x branch was released by Red Hat. The changelog for this release contains mostly bugfixes but also lists two new features. If you ‘re running Fedora and use the virt-prevew repository you would have seen it in your updates today. Otherwise, you’ll have to download and build manually from the http://spice-space.org/download.html website. Below lists the changelog for this latest release as posted in the announcement.

Changes in spice-0.8.0:

• client: exit nicely for --controller with no SPICE_XPI_SOCKET (rhbz#644292)
• client-x11: Use _exit rather then exit on X errors (rhbz#680763)
• client-x11: Fix keyb modifiers not syncing from guest to client (rhbz#679467)
• server: fix segfault on migration

Changes in spice-protocol-0.8.0:

• Add support for different clipboards (selections) to vd_agent copy paste
• Add support for using different authentication mechanisms (just SASL for now)

See the following link for the original announcement.
http://lists.freedesktop.org/archives/spice-devel/2011-March/002850.html