Being a 'Jag man', I followed the new designs quite closely. Personally, I like the traditional look of Jaguars, but I have to say I am not too upset with the new style direction they are taking... Yet, the mass market probably did demand a style overhaul (more than simply making the lights square, a the last major Jag style overhaul!).
Sightly worried about Jaguar's move to diesel engines then the style... One of the selling points for me was the quiet, refined yet confident 'roar' of a nice V6 with proper fuel...
However, yes for the extra money you can have a proper engine in the new models. As for the styling, I am a traditionalist and must say I don't think the new style is all that 'Jaguar like'. That said, I like it. I think the XF looks better than the XJ, but inside (which is where you would normally spend most of your time) I think the XJ has it. I think those light look a lot like the designer slipped with the pen, then felt too ashamed to admit his mistake.
The thing with Jaguar though, they tend to keep the traditional touches (quality, good leather and wood) but have designs which will age. The S-Type when it was released was seen as a bit crazy, but then it grew on us and looked great... The XJS, same story. Give this new line a couple of years (the XF is getting there now), and we will wonder how we ever did without it... Then give them another 25 years and we will have this chat again over a new shape!
A few thoughts on the Tata takeover...
I did have some serious concerns when Jaguar was aquied by tata. With respect, any effort tata have made into motoring has been pretty uninspiring. I should point out though, I did once walk around a tata dealership, and it is the only time I have seen a brand new, unregistered top of the range model which actually had rust on the bodywork! A real achievement, I am sure you will agree
Also, take the Rover 'citirover' (a rebadged tata inca, and indisputable proof that outsourcing to far off lands is not always a good thing), a small, economical family car which was cheap to buy, insure and run. Despite it's good points (struggled to list these), the only major benfits to this car was that it would propbably look great 1) on fire, 2) at the bottom of a cliff, and 3) being 'reduced' in a hydraulic press, one worries what the company that brought this to the motoring public would do with Jaguar...