Logos 4.5 Release Candidate 1 is now available for testing. It should be released via automatic updates within the next two weeks, but you can install it now if you'd like to see what's new and improved.
The biggest change is that Notes and Highlighting have been unified. Each highlight is now backed by a note in one of your Notes Documents; from there you can change the highlighting style, add or remove the icon that shows next to the highlight in the resource, and even add textual notes to that highlight in your Notes Document. When you upgrade, you'll get new Notes Documents for your existing highlights (one per highlighting palette); you can now turn sets of highlights on or off by (un)checking that Notes Document in the visual filter menu for a resource. Logos 4.5 will also sync notes and highlights with the upcoming v2.0 of the iOS app (keep an eye on the iPhone/iPad forum for an announcement of when that's available in the App Store).
We've also improved Personal Book Builder and added the ability to print footnotes (at the bottom of a page) when printing a Logos resource.
The full release notes are here: http://wiki.logos.com/Logos_4.5
To install the RC, download and run this installer: http://downloads.logos.com/LBS4/InstallerBeta/Logos4Setup.exe. (You won't be added permanently to the beta program; this will only install the current Release Candidate.)