Vodafone has altered pricing on its postpaid 3G plans, increasing download allowances on most plans and reducing costs on its excess data charges.
The $15 a month plan has seen its data allowance rise from 1GB to 1.5GB. $29 a month now gets you 4GB (previously 3GB), $39 gets 8GB (previously 6GB) and $49 gets 10GB (previously 8GB).
On 12 month contracts for those new plans, Vodafone supplies a free modem (except on the $15 plan, which adds an extra $4 a month if you want a modem). If you prefer a month-to-month contract, a new modem costs $79.
The other big change is that excess data charges have dropped from 10 cents per MB to 2 cents per MB -- an improvement, though not one in the same league as offering shaping or the ability to buy extra data blocks.
There's fewer changes on the prepaid front other than the introduction of a new starter pack including 6GB of data for use over three months, which costs $99 at the moment (Vodafone says the price will eventually go up to $129).
My own experience with Vodafone has been that the network has become notably worse over the last year and that the software can be pretty unreliable. However, the price improvements do make it a more appealing platform.