7d or wait?

I have the same 30D. I would wait because I am expecting the MarkII to have a new sensor with better technology, specially in low light performance.  Sure, it will be more expensive than the current one, but I don't change my camera often. My 30D is 6 year old now. The price different is not that significant for me.  I will regret if I buy a 7D now and a much better one comes out in 2 months.