WiFi, Card Reader Adapters Confirmed for PS3 | PS3Blog.net
For those of you pondering a 20GB PS3 purchase, your decision has just been made a bit easier. We already know that the HDD is upgradeable. The lacking HDMI output? Well if you need one then you better go for the higher end PS3.
But what about WiFi? Well, Sony will have a solution for you. Like Microsoft, they will be offering a WiFi adapter as a peripheral. So if you decide to buy the 20GB PS3, you’ll still be able to upgrade it to do WiFi on some later date.
And what about a card reader? Yup, Sony will have a card reader peripheral for you too.