Poll : 6 Month Cycle (or) 12-Month Cycle (or) 9 month Cycle

I am not sure really how each approach goes , but current approach is good.How do u think 6-month or 9 month cycle approach going to effect the company ?

I think 6 month cycle is hard because Apple is taking like 3 months to launch a product worldwide to maximum countries.

But a 9 month cycle seems pretty nice because we can expect re-design for every one and half year instead of 2 years and it also looks balanced little bit.

While 6 Month Cycle needs 2 iterations for reaching 18 months since we cannot expect iteration for every one year.