More than a few iOS-based Twitter users were happy to see Twitterrific 5 appear late last year with a fresh design, but were less than thrilled to go without the push notifications that many take for granted in other apps. Equality has come through Twitterrific 5.2 -- for some, at least. The upgrade at last pops up interactions as they happen, with a symbol to indicate whether it's a conversation, favorite or retweet. Push delivery isn't guaranteed at this point, however. Iconfactory is currently rolling out the beta-level feature to us