The Canon will have a MUCH larger selection of accessories from Canon and third parties (flashes, lenses, chargers, batteries, grips, etc.) than the Sony. If you opt for the Sony and then later on you decide you want to get more serious into photography, you're really going to be kicking yourself for not getting the Canon. With the Canon, you have the choice of upgrading to dozens and dozens of lenses from various manufacturers. With the sony, you have the choice of upgrading to a few.
So yeah, at this exact moment, as a beginner, it probably won't matter for you if you get the Sony or Canon. But if you think you'll ever want upgradability and expandability with your camera, Canon is the way to go.
Imagine it's the difference between an iMac and a Mac Pro. Both have plenty of power out of the box and will do you fine. But in a year you'll be able to upgrade the Mac Pro's internal hard drive, graphics card, and optic drive. On the iMac the only thing you can upgrade is the RAM.
I don't want to stick up for SONY but your post is a bit short sighted. In a year SONY will have more gear and options for their SLR system in one way or another. Its not like they're not moving forward.