Release date for CorelDraw Graphics Suite X7 / next version?

Thanks to everyone for answering my questions as a newbie this morning - great stuff (with a special shout-out / thanks to HarryLondon).

As I am now on the brink of purchasing the FULL version of X6, my final question for now relates to the age of X6 (Full) - and if anyone has any "intel" on when we are likely to see Version X7 ??

Does anyone have any idea how regularly versions are released by Corel? And if so, a rough estimate for when we are likely to see X7 be released?

(my obvious concern being that I am keen to avoid shelling out in version X6, if X7 is due next week / waiting around the corner!)