Its rumored that Verizon Wireless will soon be offering tiered data plans as add on feature to their voice plans for feature phones and smart phones.

Here is a breakdown of those tiered rates based on information published by engadget:

Q: What are the new 3G data plan options?

A: Customers may choose from the following 3G Device Data plans:

3G Feature Phones — $1.99 pay as you go or $15 monthly access for 150 or 150 MB ($15/150 MB overage) or $29.99 for unlimited monthly access.

3G Smartphones Plans – $15 monthly access for 150 MB ($15/150 MB overage) or $29.99 for unlimited monthly access.

3G Tablet Plans – $20 monthly access for 1 GB ($20/1 GB overage), $35 monthly access for 3 GB ($10/ 1 GB overage); $50 monthly access for 5 GB ($10/1 GB overage) and $80 for 10 GB ($10/1G overage).

3G Netbooks/Notebooks Built-In Plans – $50 monthly access for 5 GB ($10/1 GB overage) or $80 monthly access for 10 GB ($10/1 GB overage).

MiFi 2200 and Five Spot Mobile – $50 monthly access for 5 GB ($10 /1 GB overage), $80 for 10 GB ($10/1G overage) or as part of a 90-day promotion $35 monthly access for 3 GB ($10/1 GB overage).

There is lots more Q&A and analysis at the original engadget post.