We knew it was arriving soon, but until now, we weren't exactly sure what T-Mobile meant when it said the Relay 4G was hitting in the "coming weeks." Now the magenta carrier is putting the release of the QWERTY handset formerly known as the also verbose Galaxy S Blaze Q at September 19th. The slider will run you and your thumbs $150 with a two-year contract, after a $50 mail-in rebate.