Cool down. We all are always waiting for something new and better. But it always takes some time for something new to appear.
I think there are two things to keep in mind with this topic.
First: It does not really matter if you work with brand X or brand Y. The difference is not so big. And you can be sure, that if you do switch, the brand you left, will come up with something newer and better, than the one you switched to. This is partly due to Murphy, partly because the grass is always greener on the other side, and partly, because this is the way technological development works; no one stayes ahead forever.
Second: If you work as a pro, none of your competitors can buy better equipment. They all go to the same companies, and work with the same tools. And even more imporant, you customer does not care about your equipment, he only care about the pictures you are taking.