Right on cue, Sony Ericsson’s busted out a trio of new handsets today, including it’s latest K-series model, the K660, and a pair of new Walkman phones: theW380 and W890 . As we knew yesterday, the K660 is a HSDPA handset whose big selling point is its proficiency at web browsing, including a landscape mode, among other web-friendly features. The W380 clamshell phone, on the other hand, drops the 3G, but provides plenty of the usual Walkman-related features, including gesture control, and SE’s trademark Track ID, while the W890 ups things considerably with HSDPA connectivity and a better-than-the-norm 3.2 megapixel camera. Hit up the read link below for complete specs on each handset, and look for them all to be available in the first quarter of next year.