There’s a good chance residents of Boston and Seattle will have a new high-speed wireless broadband option before the end of this year—Verizon Wireless recently announced plans to test its 4G wireless broadband service in these cities. The new wireless data service promises speeds that are five to 10 times faster than the service used today by popular handsets such as Apple’s iPhone. While today’s 3G networks are adequate for checking email or surfing the web, they’re not fast enough for high-quality video or