This is the third follow-up to Onward to 1.5 documenting the move to the 1.5 release.
For those who noticed the update today, you'll note that the release notes were very short. All of the work the last two weeks was on internals. Much of the work was performance enhancement and modernization of some of the older code.
Stay tuned for the next release which should be more exciting.
Today we're releasing the next development test version. This is not for the faint of heart. The development test versions are available by changing your Preferences to point at the Development feed.
Be warned that there will be bugs in the Development version and you should never use it on crucial files or files that are not sufficiently backed up.
If you're concerned about this, please wait until we announce the first beta.