Does Logic desperately need an update? I don't even have logic x yet but it's still great. I originally had the full studio and audio dubbing program in 8 and I think mine is 9 - had to upgrade when I got a new Mac and 8 wasn't supported. and it is great. I see a few extras on logic x that might be useful to me, but nothing so incredible I'm itching to get it again. All add ons from here are just gimmicks or extra sounds. It's recording software and it has a great interface, I have preferred it (and still do) to every other platform I have ever used (Session 8, Pro tools, Cubase etc).
I don't really use much of the internal processors apart from match EQ.
What are the speculations it's not been updated? From my point of view I would simply say there is not much to update, especially for such a fine piece of software for only £200. Plus everything seems to 'just work' on a mac, I just plug all the mixers or pre amps, extra drives in and it's i'm off.
My main gripes with apple are them changing the connectors all the fuckin' time and making new OS backwards fuck things up (I had to buy a 2015 mac powerbook to keep the connections I wanted). If I get a new Mac now, none of my external drives will fit as they have changed the thunderbolt connection. I'd have to get an external DVD drive as they don't have that anymore, probably no SD card reader (though I can easily get around that) .
But despite all that, I'd still rather use a Mac and Logic Pro.