Google has announced the availability of printing for iOS devices.
You can read more here.
It appears to be an interesting tool.
The site claims:
“Imagine printing an important document from your smartphone on the way to work and finding the printout waiting for you when you walk in the door. Just open a document in Google Docs or an email in Gmail in your mobile browser and choose “Print” from the dropdown menu in the top right corner. You can also print certain kinds of email attachments (such as .pdf or .doc) by clicking the “Print” link that appears next to them.”
Directions for using the service are stated as follows:
This feature will be rolling out today and tomorrow for English speaking users in the US and will work on most phones that support HTML5, such as devices running Android 2.1+ and iOS 3+. To get started, you’ll need to connect your printer to Google Cloud Print. This step requires a Windows PC for now, but Linux and Mac support are coming soon. You can learn more at the Google Cloud Print help center.