X-Yachts unveils the second model in its newest range of performance cruisers X4 is the second model to be launched by X-Yachts in the brand new range, X. The first model in this range to be designed was the X6 which is set to launch in May 2016. Designed to complement both the existing two ranges, Xperformance (Xp) and Xcruising (Xc), X models wil...