Any plans for more CSI on Blu-ray?

[ChrisDilke]

Does anyone know if further seasons on CSI are going to be released on Blu-ray? I've seen Season 9 on Blu over here (and Season 1 available in the US even though it's region locked), and have thought about buying it when it goes down in price, if it ever does (it's been £40+ for ages), but if Season 10 onwards and before is going to be DVD only, I may not bother and just get Season 9 on DVD. I like to group complete sets together while also separating my Blu-rays from my DVDs, and whether I chose to separate S9 from the others or keep it with them, it would look odd on my shelf due to the different case sizes. Of course, the quality of the Blu itself is much more important to me than how the package looks on my shelf, so if anyone has this set can they tell me if it's enough of an improvement to make it really worth paying the extra pounds for?