Despite coming out on top in the last two years, Sony's chance of "winning" E3 2015 is anything but a sure thing.
Halo 5: Guardians will act as Microsoft's marquee blockbuster during the holiday period. Whether the debacle surrounding The Master Chief Collection will impact the much-anticipated sequel beyond a humble apology on 343's part remains to be seen.
While it doesn't fall under the usual camps, E3 2015 is poised to be a defining year for the VR market. For the more casual consumer, Sony has an immediate advantage in the sense that PlayStation 4 acts as Morpheus’ power hub, beaming content to within a hairline of your eyeballs at up to 120fps. Microsoft's HoloLens, on the other hand, explores augmented reality by layering a user interface onto the environment around you. Could it steal Morpheus' thunder?
All it takes is one fleeting glance at your go-to forum to deduce that Microsoft is hot favorites going into E3 2015. And if those reports in question are to be believed, the Redmond-based giant will call upon the dormant Rare to deliver a title that will effectively pull the rug from beneath us.
Despite slipping into 2016, don't count out The Legend of Zelda Wii U making an appearance. For Nintendo, E3 2015 may very well represent the Wii U's last stand, leading us to believe it will call upon its old franchises - and, perhaps, Metroid - to give its flagship home console a shot in the arm.
Though it is a timed-exclusive, Microsoft has a firm grip on the mind share for Crystal Dynamics' Rise of the Tomb Raider. If you look to your left, you'll see Lara, summing up the bemusement felt by the PlayStation faithful.
With Rise of the Tomb Raider effectively in Microsoft's pocket for an unknown length of time, there's every chance Sony could strike up a deal with EA to ensure Star Wars Battlefront - much like Destiny before it - is marketed with PlayStation 4 in mind.
The void left by Uncharted 4: A Thief's End can't be overstated, but there is evidence to suggest that Sony has enough triple-A material waiting in the wings to paper over the cracks. Guerrilla Games' open-world RPG, for instance. So long as the publisher curtails the amount of HD remakes, or at the very least, strikes a balance between the old and the new, Sony's presser will be wholly successful.