Following an announcement a few weeks ago, we've got release dates for the HTC Desire 510 on Sprint, Boost Mobile, and Virgin Mobile. Sprint is getting it on September 19 for $0 down on contract ($199.99 without a contract) or $8.34 monthly on Easy Pay. Boost will have the Desire 510 starting September 22 for $99.99. Virgin Mobile will have theirs out a day after on the 23rd. for $99.99.