The Apple event today introduced the new Mac Pro and alluded to a new version of Aperture designed to take advantage of its power. Here's the Aperture Expert link, which takes you to the streaming video of Apple's announcement:
#2. "Aperture 3.5 is not Aperture 4" In response to Reply # 0
Now that the dust of yesterday's announcements has settled we can see what Aperture 3.5 has to offer. Mostly, it's an incremental upgrade with bug fixes, but the following changes may be significant for some users: •supports iCloud Photo Sharing •integration with SmugMug for publishing and syncing galleries •supports iOS 7 camera filters on imported photos
Aperture 3.5 is available only after upgrading to OS 10.9 ("Mavericks").
Yesterday's event marked the start of a big push for the new "wastebasket" Mac Pro, and one of the featured cameos of power users was photographer Lucas Gilman. I read an interview with Gilman on a blog in which he talks about big throughput gains using the new hardware/software combination for processing RAW files from a D800.
I think this is a sign that there is a new version of Aperture is probably in the works -- it seems that Aperture 3.5 is a placeholder, modifying and optimizing the current version for OS10.9 and the new MacPro.
I suppose I'll upgrade to 3.5 when I upgrade my OS, but I'm in no grand rush....
#3. "RE: Aperture 3.5 is not Aperture 4" In response to Reply # 2
Updated my mac osx platforms to osx 10.9 'mavericks' with zero problems. The osx update is free and available from your current osx software update menu tab, or from the app store icon. Be sure to complete a successful osx 'mavericks' update and install first, before upgrading and installing the aperture 3.5 version. When you open aperture 3.5 after the upgrade install, your old aperture version 3.4.5 library (or libraries) will also be updated. I had no problems with the updates of my old libraries by the new aperture version 3.5, but make sure you have good copies of your old 3.4.5 aperture image libraries before you make the update to 3.5 Aperture version 3.5 has new osx 'mavericks' raw-file rendering algorithms. This means you will need to re-process the raw originals for all your older pre-version 3.5 raw edited versions - but only if if you decide to re-edit those older 3.4.5 raw files using aperture 3.5. The new osx mavericks raw-file import rendering algorithms seem to work just fine for the nikon dslr cam bodies that I have just tested, importing into aperture version 3.5.