7tune is usually spot on..
http://www.7tune.com/skyline_001.html
Text from 7tune article
It's quite evident now that since the Skyline was introduced and especially in the last 10 years, each new Skyline base model has progressively become less sporty, in particular the current V35 Skyline. But don't give up on the Skyline yet, Nissan is in the process of putting ‘sports' back into the Skyline range, with the introduction of the V36 Skyline sedan and Coupe. The next model in the Skyline lineage is now under development, for a release mid-2006.
The V36 will be designed primarily for the North American Market. In a move that points to a total shift from the famous R-series Skylines of the late 1980's to the early 2000's, the next V36 Skyline will mark the absolute end of the ‘100% Japanese Skyline', something which long-time Skyline enthusiasts have pondered since the introduction of the V35 Skyline sedan back in 2001. The success of the current Infiniti G35 sedan and coupe in the North American market has prompted Nissan to increase the American influence across Nissan's entire range. The fact that the Skyline is Nissan's most revered model, the focus of the new way of design and marketing is geared to appeal to prospective new car buyers outside Japan.
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What might be seen by some as a little odd, our source within Nissan R+D has hinted that the use of the ‘V36' designation is still undecided and that the old designation ‘V35' might carry through for the next 2006 platform. But nevertheless, we've been assured that the 2006 Skyline will be the ultimate sports saloon to take on Mercedes Benz, BMW and Lexus in the USA - it's primary intended market! This might bring tears to Skyline enthusiasts eyes, but it will ensure that the Skyline family survives into the future amongst a completely revamped Nissan line up which bears little resemblance to the old ‘bubble economy' days. The Inifniti G35 is selling strong in the USA, so the 2006 incarnation will go head to head with Lexus's yet-to-be-released S350 and BMW's 3 Series.
The body of the 2006 Skyline will be along the lines of the current V35, but it'll be lower and wider, the Coupe being even more sporty and ‘elegant' than the current design. Of note, the headlights and overall look of the front of the 2006 Skyline looks very similar to the current Fuga, this is intended to give the Skyline more class and to reinforce the Nissan brand style that is evident with Tiida, LaFesta, Note and Primera, but without drawing anything away from it's sports car handling and performance.
The current VQ35DE, VQ30DE and VQ25DD will still make up the staple engine line up for the 2006 Skyline, but the big news is: Nissan North America have requested a 4.5L V8 to be installed in the top-of-the-line 2006 Skyline! Plans to incorporate the a 4.5L V8 rated at 350ps or even 400ps to compete with BMW and Lexus is just a dream of Nissan North America at the moment, but it could very well be a reality 2 or 3 years from now in the 2007/8 Infiniti G35 face lift model. We're not sure how this would affect sales of the Infiniti M45 (with the same engine/driveline configuration albeit in a bigger shell), but we are sure that Nissan will take all this into consideration. The chosen transmissions will be a 6 speed manual and an all new 6 speed automatic. No CVT transmissions will be offered for the 2006 Skyline.
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Overall height of the next Skyline is lower than before, similar to the BMW 3 series, so it's obvious that BMW is the next target Nissan plan to beat in the North American market. To drive home the sporty nature of the 2006 Skyline, the focus will be on engine performance and handling to match or exceed the BMW 3 series benchmark. The new platform for the 2006 Skyline still incorporates the multi-link suspension front and rear which appears in the current V35 Skyline, but the suspension tuning will be very different, the chassis designed to handle over 300ps which the next upgrade of the VQ35DE is expected to produce.
Well, there you have it, the attributes of the Skyline that thousands of enthusiasts the world over have grown to love have finally been laid to rest with the 2006 Skyline (Infiniti G35) to be designed for the US market. A sad day for Skyline fans? At any rate, the 2006 Skyline/G35 will be an excellent sports saloon, and if Nissan is successful, it'll raise the benchmark over the current king – the BMW 3 Series.