The Unofficial Sony Ericsson Blog is reporting that Sony Ericsson's rather stellar showing at Mobile World Congress isn't quite over yet. As you might recall, the joint venture owns UIQ, so it would make some good sense that it'd save a couple surprises for UIQ's MWC press conference, which doesn't go down until the tail end of the show on Wednesday. One of those surprises might just be this, a UIQ-powered candybar going by the codename "BeiBei" that features a dizzying (and frankly, nonsensical) array of navigation buttons and a fairly buttoned-up appearance that should appeal to businessfolk. Another possible UIQ debut is said to be "Paris," a higher end device. If this all pans out, it was rather brilliant of Sony Ericsson to let the X1 fervor calm down before launching another volley, wasn't it?