FYI : 24p at 60hz is completely, 100% solved in software without frame interpolation.
I think it's called frame blending (which doesn't invent frames, it just blends between them smoothly in intermediary time slices). The result is no 3:2 cadence, ever. I think it's the new Mad VR that supports it. Anyway, look it up in the HTPC subforum, people there seem very satisfied at the panning / smoothness of it. Honestly I hate 24p and would never switch into it again if I could (except I play back my Blurays on my PS3 because I absolutely loathe fiddling with PowerDVD software updates and problems on the PC side of Bluray playback).
I'm so glad 1080p SBS is supported now, it'll make it easier to play Skyrim/etc when I have time to play it again! I HATED having to switch into 1080i / 60 to do 3D, it was so annoying. The benefit of it being auto-detected is really what I wanted the whole time from a firmware update, so this is IT ! All our prayers have been answered (well, most).
I think it's worth it to void my warranty because it's only good for another few months anyway, and this PJ has given me no problems otherwise aside from the red blinking light on startup occasionally, which apparently this firmware fixes too!
Re : 2.35 : 1 in 1920 x 800 : that actually only creates a 1920 x 1080 sub-resolution, so I believe it still sends 1920x1080 over the wire. What's more important is that it doesn't do stretching, unless you tell it to in the projector. Although, there is really not much point in doing all that with Zooming, IMO. It will help windows desktop always stay in your Scope screen, but then you might consider adding a wide angle A-lens (which I will do, shortly).
I wonder if 3D has been fixed with the vertical stretching. It probably works fine with 1080p SBS or Top/Bottom, since it worked with 1080i Top/Bottom with Skyrim running in a custom 1080i/60 -> 1920x800 resolution, but not with FramePacking (either from PC or from PS3 in 1080p / 24).
SVP codec works so well and looks great with my new Haswell system (MUCH less artifacts when you upgrade your CPU), that I think it may be worth it to hack a 1080p / 30 frame packing mode into the firmware, as that will definitely fit within the HDMI bandwidth budget, and going up from 24p -> 30p in 3D movies and Blurays would finally give me a good reason to give my PS3 to my niece. (esp since I will get an Xb1 and PS4 when they come out). 25% smoother from not-very-smooth is a big upgrade in smoothness, IMO. And 3D benefits from more smoothness twice as much as 2D. I remember Hobbit HFR looking much more "solid" and "there" than the non-HFR 3D version. Every little bit helps. For games I'd probably stick to 60hz though, over frame packing, better to have double the frames than double the horizontal rez.
I'm upgrading my firmware tonight with the aid of an LCD monitor loaner from the office, and will try to see if vertical stretching works in the 1080p SBS / TB modes. That would be pretty sweet.