Today Apple announced the rates for iPhone:
For new customers:
$59.99
- 450 minutes
- Unlimited data (mail/surf)
- 250 SMS
- 5000 Nights & Weekends
- Rollover minutes
- Unlimited Mobile to Mobile

$79.99
- 900 minutes
- Unlimited data (mail/surf)
- 250 SMS
- Unlimited Nights & Weekends
- Rollover minutes
- Unlimited Mobile to Mobile

$99.99
- 1350 minutes
- Unlimited data (mail/surf)
- 250 SMS
- Unlimited Nights & Weekends
- Rollover minutes
- Unlimited Mobile to Mobile

For existing customers:
20$
- Unlimited Data (Email/Web)
- Visual Voicemail
- 200 SMS Text Messages

30$
- Unlimited Data (Email/Web)
- Visual Voicemail
- 1500 SMS Text Messages

40$
- Unlimited Data (Email/Web)
- Visual Voicemail
- UNLIMITED SMS Text Messages