Sage 3.0.1 is out. Compared over 3.0.1.final there was one crucial bug fix to the Singular pexpect interface. Binaries have been build and are currently mirroring out. This is mostly a bug fix release, but there are also some new interesting features. For details check the Sage 3.0.1 release tour, which is as I type this still somewhat work in progress.
The next release is another bug fix release, i.e. Sage 3.0.2, planned about a week from now. It will likely be released with much of the work that will be done during Bug Day 12 this Saturday. Other than that we are waiting for the Coercion team to finish their rewrite which will then be merge in Sage 3.1.