Sussex appoint ex-Australia bowler Jason Gillespie, who coached Yorkshire to two Championship titles, as their new head coach.
Essex appoint assistant coach and ex-Yorkshire and England all-rounder Anthony McGrath as their new head coach.
Kent all-rounder Will Gidman extends his contract with the Division Two club.
Shiv Thakor, who plays for Derbyshire, has been convicted of two sexual exposure charges.
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Essex head coach Chris Silverwood tells BBC Essex that their title win was because of their "fighting spirit in abundance".
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How to get into Cricket
How to get into cricket - physical exertion with a chess-like element in matches which range from half an hour to five days.