What are the chances that Apple closes the exploits when they issue a patch for the MS Exchange issues caused by 6.1? I am aware of a number of schools and companies that are blocking 6.1 devices from accessing Exchange, so this is potentially a big issue.
http://www.afterdawn.com/news/article.cfm/2013/02/13/microsoft_says_block_ios_6_1_to_fix_exchange_issues_while_apple_works_on_fix
http://www.afterdawn.com/news/article.cfm/2013/02/13/microsoft_says_block_ios_6_1_to_fix_exchange_issues_while_apple_works_on_fix