Here's the full announcement made on Twitter.
1/ @TMobile customers are pumped to get the new #iPhone6s –preorders up >30% over last year!
2/ @TMobile already has the best deal out there for customers to get a new #iPhone6s – and like clockwork, the other guys are messing w/ you
3/ It happens every time - they try to lure you and lock you into their service with confusing deals. It’s, say it with me now, BULLSHIT!
4/ How does getting the new #iPhone6s for as little as $5/month or $10/month sound on @TMobile w/ #JUMPonDemand?! OK - DONE!
5/ On Friday, you can get the new #iPhone6s at @TMobile w/ #JUMPonDemand for $5, $10 or $15/month - depending on model and trade-in #BOOM
6/ YES – you read it right! Trade-in an iPhone6 & get a new #iPhone6s for $5/mth or trade-in your iPhone5s & get a new one for $10/mth!
7/ Let me answer your next question – Yes! You can take advantage of this offer if you’ve already pre-ordered with a trade-in. ;)
8/ Want to own your iPhone? OK. You’re still getting the best deal from us. We’re the ONLY wireless co. offering the #iPhone6s at a discount
9/ Pair our Extended Range LTE (band 12 / 700Mhz) with the new iPhone6s + our #LifetimeCoverageGuarantee and you're SET UP!! #uncarrier
10/ AND don’t forget with #JUMPonDemand you can upgrade 3X/year! Will share more details tmrw, but had to tell you about this deal ASAP! :)
To summarize, a trade-in of an iPhone 6 will now let you get an iPhone 6s for $5/month with T-Mobile's JUMPonDemand program. An iPhone 5s trade-in gets you an iPhone 6s for $10/month.