3.0.0a6 has been released to address a speed issue that appears to have been lurking for a number of releases, including some 2.x releases. The problem was a single multiplication in a hash for int's and long's that isn't helpful. In benchmarks the cost of this extra multiplication was found to be significant. I'll discuss it more in a coming blog post, but this teaser chart shows the progress that has been made between Trove 2 and 3.0.0a6.
You can download 3.0.0a6 here.