An update to Evernote for iPhone and iPad (v 3.3.8) went live in the App Store earlier today. Here are some of the highlights:
Improved Premium offline notebooks

Premium users get two nice enhancements to offline notebooks. There’s an improved interface, with much clearer information about exactly when things are synchronizing and which notebooks are stored offline.

Offline notebooks can now sync over 3G. If you would prefer that things only sync of Wi-Fi, then tap the switch to the ON position. Be aware that syncing over 3G may mean large data transfers, which may incur carrier fees.
If you would like to take advantage of the offline notebooks feature, then upgrade to Evernote Premium. You can do that from our website or through the Sync menu of Evernote for iPhone and iPad.
Improved searching
This release includes major improvements to searching within Chinese, Japanese and Korean language notes.
Lots more
There are also a bunch of improvements for editing and appending text, as well as a slew of bug fixes.