Sony Teasing Slim-Related Announcement

Sony is sending out invitations for a PlayStation-related announcement regarding something slim. The invitation below, sent to IGN, reads: "Following the biggest launch in PlayStation history, join us for an introduction to the slimmest."
 

The obvious announcement is confirmation that the slim version of PlayStation Vita will be coming to North America and Europe. But why stop there? Maybe Sony will also announce that PS Vita TV will be coming west. Heck, let's take it a step further and consider the possibility of Sony announcing an even slimmer version of PlayStation 3. Yeah... that last one is a little too farfetched.

What do you think Sony will announce on January 30th?