We weren't convinced LG's Z160 convertible was skinny enough for Ultrabook status when we went hands-on at CES, but the Korean company has run with the title and launched the Tab-Book Ultra in its homeland. The 11.6-inch slider runs full-fat Windows 8 on an Intel Core i5 CPU in the top-end configuration (GH5WK), and much to the joy of data-hungry users, packs an LTE radio in addition to standard WiFi. Those who want a more traditional laptop experience but also need 4G for the road can now purchase an LTE refresh of the U460 notebook, which has been launched in tandem. LG will be showing off the LTE-equipped Tab-Book Ultra at MWC later this month, although its 'new series' of smartphones is sure to steal all the attention. We're still in the dark about when the Z160 will be available elsewhere, but Korean e-tailers are listing it at circa 1,400,000 won (around $1,300), so we can probably expect a similar price when it starts touring.