According to MacRumors forum user SilvorX, with the launch of the iPhone 4 on MTS on April 26, 2011, MTS is set to reveal a new unlimited data and tethering plan for iPhone 4 customers.

Unlimited Plus Plan – $74.99/month

• Minutes: 350 Daytime Minutes, Unlimited calling between MTS Mobile to Mobile users within Manitoba
• Evenings/Weekends: Unlimited @ 6PM
• Data: Unlimited Data with Unlimited Tethering
• Features: Unlimited text/picture/video messaging

The plan also reportedly costs $69.99/month, instead of $74.99, when bundled with other MTS services.

The MTS iPhone plan is likely to be available on a 3-year contract and provide promotional pricing of $159/$269 for the 16/32 GB iPhone 4.