Highlights in Apple news this past month include the announcement that the Mac App Store will open on January 6 and the passing of a new milestone in market capitalisation. Apple’s market cap now stands at over $300 billion, which is still some $70 billion behind Exxon Mobil -- the largest US company. This marks a great year in stock for the company, which passed $200 billion back in March and rose to become the second biggest US company in May (leapfrogging Microsoft).

Open-source x86 and AMD64/Intel64 virtualisation tool VirtualBox received a major update shortly before Christmas. Version 4.0 provides a major reworking of the GUI, adds support for new virtual hardware, removes the 1.5/2 GB guest RAM limitation on 32-bit hosts, and more. See the changelog for a full run-down and the official site for a download.

In news we missed last month, MS-DOS emulator Boxer has entered public beta for version 1.0. New builds were released throughout December, with the biggest changes being that games can be imported “painlessly” from CDs or folders, there is a dedicated games folder automatically created, and the program launches with a welcome panel. Check out the official Boxer website for more details.

MAME and SDLMAME were updated three times over the past month. The latest version (0.141) adds support for the games Heavy Unit, Poizone, Silver Game, and Jack Potten’s Poker, in addition to providing a long list of improvements and bug fixes. Check out the MAME website for full details, and grab the latest SDLMAME build from here.

More updates after the break.

The next major version of Mac OS X will be called Lion, it was revealed at a “Back to the Mac” media event on October 20. Due for release in mid-2011, Lion promises to bring dozens of features and ideas from the iOS devices. It remains to be seen how well these features will work with the larger Mac screen and a keyboard/mouse set-up.

But the big talking point has been the Mac App Store, which will be similar to the iOS App Store. Many (including myself) predicted this move to a central repository for Mac software, and the general consensus seems to be that it is a good thing -- provided the Mac App Store remains just one of many ways to obtain software for your Mac. Apple is soliciting submissions for the store, which is due to launch early next year.

In other Apple news, the new 11” MacBook Air fills a long-vacated hole in Apple’s laptop line-up -- last occupied by the 12” PowerBook. The base price of US$999 makes for a very tempting deal. Xserve, Apple’s rackmounted server line, will be discontinued on January 31. Apple has provided an "Xserve Transition Guide" to help existing users migrate to the Mac Mini or Mac Pro server solutions. Apple also revealed that its port of Java for Mac OS X is officially deprecated.

Apple also reported a Q4 revenue of $20.34 billion, an all-time record for the company. Year-over-year Mac and iPhone sales increased by 27 and 91 percent, respectively, while iPod sales dropped 11 percent in the same period. Check out the press release for a full run-down.

Leading Mac emulation headlines is the news that PowerPC Macintosh emulator SheepShaver has been updated twice in as many weeks. The new build offers a number of ‘under the hood’ changes, partial support for bin/cue files, and 64-bit mode for Snow Leopard users. See the E-Maculation forums for a download link and additional information. [Thanks WatchSmart for the tip.]

More emulation news after the break...

A Mac-native version of GameBase64 Browser has been released. GameBase64 is a database of over 20000 Commodore 64 games, with detailed information and screenshots for each game. Setting up is not exactly intuitive if you do not already have the database file -- you’ll need to drag a folder (any folder) to the application, then it will tell you that the folder contains no valid database file. It will then allow you to download the database file from within the application. You can get screenshots and sounds packs here. It offers the ability to launch games in your C64 emulator of choice, but I couldn’t seem to get that feature working. Despite this strange configuration problem, it’s very impressive, so be sure to check it out (provided you have Snow Leopard installed).

A new version of the open-source IA-32 (x86) emulator Bochs was released on April 25. Release 2.4.5 implements X2APIC and Intel VMx2 extensions, fixes some CPU emulation bugs, reworks the configuration options, and more. Check the changelog for full details.

Those of you desperate for Steam on the Mac will have to wait just a little longer, with Valve announcing that it will be released on May 12. No word yet on what games will be available at launch, although you can be sure a few of Valve’s titles will be there.

More updates after the break.

Here’s some of the news you might have missed over the past month or-so:

In news from just a few days ago, the Mac-only Nintendo 64 emulator Sixtyforce has risen from the dead. After more than two years without an update, author Gerrit posted a new version on his birthday earlier this week. The update brings major improvements to the Cocoa interface, graphics and game compatibility, sound, and more. Download it here, and be sure to check out the MacScene discussion topic for more details (thanks erise for the tip).

The iPad launched in the United States less than a week ago, but is believed to have already sold more than 500,000 units alongside many favourable reviews. In less than 24 hours we’ll get a better idea of the iPad’s potential, as Apple will unveil iPhone OS 4.0 at an invite-only preview event.

In March, Valve officially announced that the Steam gaming service and Source engine would be coming to the Mac this month, with the Mac now considered a “tier-1 platform” by the company -- which means simultaneous release of future games for Mac and Windows. The announcement drove interest from other developers, including Gas Powered Games and DICE. Applications for the Steam on Mac beta are now open for anyone willing to tell Valve their life story (link). Check out the MacScene community's reaction here.

More emulator updates after the break.