Apple iPhone 5S aside, we thought the lion's share of new hardware had been launched for 2013. We guessed wrong, as rumours of new phones keep slipping out. Nokia has gone a step further, actually confirming a launch for next month.Confirming a launch, but not confirming just what it plans to launch. The invite says that the 'Nokia Lumia Story Continues' and that it will continue in London on 14 May. That almost certainly means a phone aimed at the UK market.An event also indicates something at the top of the range. A couple of weeks ago, a handset codenamed Catwalk did leak online, with an aluminium casing for a lighter device and with specifications said to include a 4.5-inch display, 1.5GHz S4 dual-core processor, 16GB of internal storage, an 8.7-megapixel camera with LED flash and a 2000mAh battery.Is this the new launch? We should know in just over two weeks time.