The new 4G equipment is a software defined, so when we upgrade a site to 4G it will provide Basic 2G, GPRS, EDGE, Basic 3G, HSxPA, HSPA+, DC-HSPA+, LET (4G). (phew!)
The backhaul is being upgraded also to Gbit fibre, so you will get the speeds that the air interface can support.
70% by end of 2013
98% by end of 2014