ScalaMock 3.0-M1 (scaladoc) for Scala 2.10.0-M4 is now released. It supports:

Mock functions, traits and classes
Both expectation-first and record-then-verify (Mockito-style) mocking
ScalaTest and Specs2

To use with sbt:

libraryDependencies =
"org.scalamock" %% "scalamock-scalatest-support" % "3.0-M1"

For background information, see ScalaMock 3.0 Preview Release.

It’s been tested against overloaded, curried and polymorphic methods, by-name parameters, path-dependent types and type projections. There may still be corner cases that aren’t handled correctly, please report a bug if you find one.