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Thank you for beeing a good Hive citizen! :-)

As for the HardFork, there are just fixes and improvements, such as for recurrent transfers (fix for existing bug in some edge cases where user couldn't set a recurrent limit time properly, or enabling users to have multiple recurrent transfers to same acccount).
Most visible one I think would be a change for voting in a way that your vote will use your full voting power instead of current mana.
To put it in a simple example. If your vote gives 0.010, and you saw three awesome posts written by alice bob and charlie, and you upvote them, then alice will get 0.001 vote, but bob will get 0.0098 and charlie will get 0.0096.
Of course one could write a bot to vote as soon as voting mana replenishes, casting those votes every 2 hours and 24 minutes, but not many knows such internal quirks and not many wants to write bots or vote taking into account those intervals.
With this change in place user would just vote 0.001 every time, as long as user has voting mana which is enough for 10 full votes a day, or more precisely for 50 votes in 5 days.

Thank you, yes, hopefully I'll see you in Split :-)