@draconatorz
EDIT: The Deluxe Upgrade is now available, please check the game's addons or extra content page.
I am not sure if anyone else is still monitoring this thread, but I finally have some really good news! :D
This (leaked?) image has been recently posted on the Mass Effect SubReddit and informally confirms that we will indeed be able to upgrade to the Deluxe Edition post-launch.
Not only that, but purchasing the upgrade will also give you the pre-order items (i.e. Deep Space Explorer Armour, Nomad Skin and Multiplayer Booster Pack), so there's no more pressure to pre-order the game if you don't want to. Hooray!
P.S. You can also finally check out the Pathfinder Casual Outfit, Scavenger Armour, Elite Weapon Set and Pet Pyjak - definitely upgrading as soon as I am able to! :P
That could just as easily be a poorly-worded metaphor.
