No, but the way the spectrum policy has been designed for the upcoming auction, it says that if any provider has access to two blocks of spectrum, either through ownership or through combining with pooling its spectrum with somebody else, then you have an obligation to build to 97% of your existing footprint.
For Bell that would basically mean all the rural areas. But if you don't have an existing footprint or if your existing footprint is only Toronto and Montreal, like my friends, then they have absolutely no rural obligations.