Hardfork will occur 3th , possibly 4th week of July.

1) We will have big change to the consensus division of block rewards, new class of nodes will be introduced - Super nodes.
Read more here: https://zencash.com/assets/files/Zen-Application-Platform-Whitepaper.pdf
To get smooth start with supernodes - which will go live in q4 of this year, benefits for staking 500 zen necessary for a Super Node will star after the fork.

2)It's still not clear what direction we will take we are studying all possibilities.
Three solutions on the table currently are to :
    1. Require block hash pointers to n > 1 blocks whenever there are parallel blocks reported on the network.
    2. Introduce a penalty metric for delayed block reporting (with a complementary option to dynamically adjust difficulty
      based on the penalty metric),
    3. To use our node system as a sort of notarization service that effectively layers proof-of-stake on top of the current
         proof-of-work.