There have been three additions made to the Search page and one update made to the Quick Add form.
On the Search page, you now have the ability to search for transactions that have no category and/or no account associated with them. This will be helpful for tracking down rogue transactions. Also, you now have the ability to specify whether or not the transaction you're looking for is a deposit or a withdrawal.
On the Quick Add on the Account Summary page, if you are viewing a specific account (anything other than "All Accounts"), that account will be the default when you are adding transactions through Quick Add.
Please keep sending in those requests. They may not make it onto the site immediately, but if they're good suggestions, chances are they'll make it up sooner or later.