OmniGraffle and OmniGraffle Professional 5.4 are now available (and an important note about 5.4.1)
 

We're happy to announce that OmniGraffle and OmniGraffle Professional 5.4 have been approved by the Mac App Store, and are now available for download both there as well as on the OmniGroup website.

A quick recap of what has gone into this release:
[LIST][*]Adds 64-bit mode for those with the hardware and OS to support it[*]Quick Look previews are back, they are dynamically generated from a plug-in inside the app instead of writing out a PDF to the file or file wrapper[*]Stencil searching is now much more logical[*]Shadow rendering is greatly improved[*]Overall stability is much better when running in 64-bit mode[*]New application icon (woo!)[/LIST]
[B]*** Of Great Importance: 64-bit mode has changed the minimum Operating System Requirement to Mac OS X 10.6.8 or later. ***[/B]

Full release notes and download links can be found at our [URL="http://www.omnigroup.com/products/omnigraffle/download/"]download page[/URL].

[B]Another important note:[/B] A regression in JPEG export was discovered while in review. The options for scale, resolution, and compression are no longer displaying. This has been addressed in an OmniGraffle 5.4.1 beta release, which can be found at [URL="http://www.omnigroup.com/products/omnigraffle/overview/#beta"]our website[/URL] a little later today.

If you need to have those JPEG export options, it's recommended that you download the 5.4.1 beta or just stick with version 5.3.6 until 5.4.1 is approved and ready to go. We're planning on waiting a full week to catch any other critical issues that may be found in the 5.4 release and then submitting to the Mac App Store.