Here at Realmac HQ we're all pretty stoked for Apple's 'Back to the Mac' event later today. Whilst iOS is garnering all the press, and the App Store gaining more traction than ever, it seems the rumours of Mac OS X's demise have been slightly exaggerated.

So what do we think we'll see at today's Apple event? We've been thinking about it at the office, and whilst we don't know any more than the rest of the world about Apple's Mac plans we thought it would be fun to share our predictions with you.
New MacBook Air
It's fair to say this is all-but-confirmed, but if you're wanting a touch-based Mac we think you'll be disappointed: if the Air is smaller than the current generation, that'll place it within spitting distance of the built-for-touch iPad.
New releases of iLife and iWork
The last refresh of iLife and iWork was back in January last year, and whilst we're not sure what'll be new in the releases, it's more than likely they'll both be updated today.
FaceTime in iChat
Given that iChat currently supports video conferencing, it's not a stretch to imagine Apple offering FaceTime in Mac OS X 10.7. The ability to video chat between iPhone / iPod touch and the Mac - not to mention the inevitable iPad with FaceTime - makes this a no-brainer.
Resolution Independence
Resolution independence has been in the works for Mac OS X since 10.4 'Tiger' launched in April 2005 and Apple's current developer documentation states "Resolution independence is still a developer-only feature in Mac OS X v10.5 and is not yet intended for end-user adoption". However the iPhone 4's Retina Display has reiterated the importance of resolution independence - and we'd be surprised if 10.7 doesn't bring complete resolution independence support to the Mac.
RIP, Aqua
There are only a few Aqua elements left in Mac OS X today, and we think that Apple will likely replace the blue contrast in the remaining controls with something slicker.
Mail / Address Book / iCal UI
The graphical style of the iPad's apps, combined with the slick style of the MobileMe web apps, makes us think that Apple will give the equivalent Mac apps a UI refresh too.
MapKit
MapKit - which powers almost all the maps in iOS apps including Apple's own - is the framework we'd most like to see added to the desktop from the touch OS. There are tonnes of uses for displaying maps and using the associated geo tools MapKit has to offer.
AirPlay
Apple's new protocol for streaming audio is due to appear on all iOS devices next month and we think AirPlay will make an appearance within QuickTime X alongside developers APIs for apps to use the technology.
Elastic scrolling / Pull to Refresh
Elastic scrolling is used in iOS to show a user has reached the end of a scrolling view (or that a view doesn't have anything out-of-current-sight to scroll to). On the desktop, the presence of scrollbars is used to display this as well as being a method of scrolling. As such we don't think Apple will move to an iOS-style scrollbar.
Mac OS X App Store
We're certain the idea of a Mac App Store has crossed Apple's minds during 10.7's development, but we'll be surprised if Apple announce one today.
Game Center
Apple built Game Center to provide users with a one-stop place to see how they're doing in games against their friends, however much like Ping it's also a trojan horse to sell more content (in this case, games from the App Store). With or without a Mac OS X App Store we don't think this is going to happen in 10.7.
Touch-based Macs Running 10.7
Mac OS X isn't really designed for touch, and if Apple were to launch larger-form-factor touch-based devices we really think iOS would be reworked for the hardware - instead of Apple trying to retrofit the latest desktop release for touch interaction.
MacBook Family Without Optical Drives
If our laptops are going to get any thinner, the optical drive will have to go. Some of the team think this won't happen until next year, so we're putting this as a wildcard.
iBooks.app
Apple would probably prefer people bought an iPad to read their iBooks, but we'd like to see a built-in app that allows you to read iBooks you've added to your iTunes library. One idea we discussed over lunch today was that Preview would get iBook-reading capabilities, but we'll see.
More iOS Frameworks in 10.7
Apple brought the iPhone's QuickTime implementation to the Mac as QuickTime X in Snow Leopard. With that in mind, we're throwing out a couple of wildcards to some iOS Frameworks that we'd like to see on the Mac: Media Player (API for accessing iTunes media) and the Asset Library (API for accessing iPhoto / Aperture media).
When?
We'd love to see a Developer Preview of 10.7 today, however we're settling on 'before WWDC 2011' for the Developer preview with a public release this time next year. iLife and the MacBook Air should, of course, be available in the near future though.