Not a 100% lock, but I would imagine that Obsidian might have a little bit of inside info. For their most recent Kickstarter update, when talking about how the game codes are being disseminated:

GOG.com: We will be offering DRM-free options based on the platforms that GOG supports at the time of us shipping the game. Currently, this means you only have a Windows DRM-free option, but apparently some big news for Mac users is coming… tonight, and hopefully good news for Linux users too down the road.

You may have noticed that there isn’t a DRM-free Linux version listed; that’s true today, but by the time we launch, we’ll have one available.

http://www.gamefront.com/cd-projekt-gog-com-plan-mac-announcement-event/

Looks like that announcement tomorrow has already lost some of its thunder.

Can't say I'm surprised. It's pretty much what I was expecting the new 'platform' to be. As vocal as our resident Linux users are, the Mac market share is just much greater in the end (plus a hell of a lot less compatibility issues, I assume).

Well, if this is true, there goes my enthusiasm for tomorrow's announcement. With the exception of video editing; I personally have no use for Macs period. I don't want Mac users to take this as an insult (because it isn't); I just think Linux users should really get more support for gaming than they have in the past.

If it turns out Mac is announced that's the way the cookie crumbles, but I am still hoping Linux gets love (as well at least) so I can become less reliant on Windows for my gaming needs. Well, no matter what, hopefully there is something there for everyone at tomorrow's announcement, am I right? :)

If they announce mac support i will be angry and my wallet will be very empty. One day it might recover, but it will take time.

The "big news for Mac users" thing is old news, going back to September 25 at least. But the big news for Mac users is that Witcher 2 is coming to Mac; the Obsidian people seem to have misunderstood something. Except that they have inside information (one of them definitely said somewhere that they know what the big announcement is, but aren't allowed to tell), so if they think Mac support is coming, maybe it is, anyway. Well, we'll find out in less than 24 hours now, anyway.

You mean Mac owners will finally be able to play real games?! :D

There is exactly one configuration to test on for current Macs. There's eleventy billion variations on Linux. Support would be an endless nightmare, it's just too fractured a landscape to work with GOG's high maintenance, high support mantra.

I feel bad for Linux users, but anyone who still thought GOG was going to add Linux was ignoring the facts. TET already explained why they weren't going to be supporting Linux shortly before this announcement. Witcher 2 is coming to Mac, and CDP would want it available on their own store. They released a teaser that was a shot for shot parody of an iPhone commercial. You have to be in a pretty deep state of denial not to pick up the hints.

Now now. Don't be mean. =P

Yeah, yeah. Theygot more than one mouse button fairly recently, I shouldn't be so mean. *snerk*

There is not "one" configuration to test Macs there are still more than one type of Mac out there thus more configurations (much like PC though not as many). As for variations of Linux, yes there are a lot of them, however, most services and games are generally developed for Debian kernals and it's subsequent offshoots (Ubuntu, Mint, etc...). If they limited to specifically to that then it wouldn't really be "a nightmare" per se.

I wouldn't say it was ignoring "the facts", saying anything as fact before it is stated as such is still just speculating. Actually, TET (as far as I am aware) said that months ago after one of the more recent "big announcement" streams. If he has said that recently, then I haven't seen it. The Witcher 2 was announced for Mac a while back so that was hardly new.

The trailer (if it's the one I'm thinking of) seemed more like a parody of a PSA. I find it a tad insulting to say one is in denial for hoping for something beneficial to them. I never claimed GOG was going to support Linux; I said I will be disappointed if the news about the OS would be Mac. It's good for those who use Mac, but it doesn't help Linux users. Again, this is just my view point on the matter.
Mean...but so, so true. :P jk

As one of the only people who exclusively plays GOG's releases on a Mac, I'd actually much rather see Linux support first before official Mac support. First, because (a) the Linux community really needs it, and I'd argue they would be much more in line culture-wise with GOG's ethos than the Mac community, and (b) I really don't want to see the GOG forums flooded with even more clueless idiots complaining about this and that.

Because if GOG does something seriously nutty and announces that official Mac support will come for all of their classic titles, I can only imagine the flood of posts that will come on the forums...

"What? What do you mean this needs an Intel Mac running Lion!? I played this game back in 1996 on my 120 Mhz Performa! I demand a refund!"

Since you run GOG games on Mac, I find I must ask this. How is the emulation, do you run into many issues or is it fairly smooth? I only ever really use a Mac for editing, and the gaming I have done on one was with Mac native versions of games.

So how do they plan on supporting it? Shipping games with DOSBox and WINE? They can't do native builds for most stuff, that's my impression anyway.

I can see DOSBox working out ok for titles that use it, but not WINE. That seems like a support nightmare waiting to happen.

I also game exclusively on my mac. But i have never had any involvement in the mac community. Do you really think it would be that bad?