It looks like Cricket is going to be offering two 4G broadband plans to start:

$50/month for 5 GB of data with speeds up to 3 Mbps.

$60/month for 5 GB of data with speeds up to 6 Mbps.


I haven't seen anything to indicate that throttling will follow after the 5 GB of data.

Source: Leap's Cricket Service Begins Network Transition to 4G LTE with First ... - Sacrament