I just tried to edit a couple of sites using my new iPad. No luck, unfortunately. The main HTML editing window in the CMS is not recognized as a data entry field on the iPad. I'm sure I have edited pages on the iPhone in the past (in desperation, while on holidays).
Has anyone else tried using an iPad to update a SS site? I tested two sites, one on 2.3.x and one on 2.4.0
A major planned use for the iPad was as a laptop replacement while traveling so this could be a problem.