Dvorak, who has been with the Mavericks since the team's inception in 2009, will join the St. Louis Blues equipment staff.
The Mavericks will compete in the newly-formed Central Division.
Mavericks general manager Brent Thiessen was named ECHL Executive of the Year at the league meetings in Las Vegas.
The Kansas City Mavericks released their season-ending roster on Friday.
The Mavericks sent the rights to Eric Scheid to Kalamazoo after acquiring Justin Breton in March.
The new affiliation for the Mavericks will be with the NHL's Calgary Flames and AHL's Stockton Heat
The team will announce new NHL and AHL affiliates Thursday at 2 p.m.
New season ticket holders picked out their homes for Mavericks hockey on Saturday
The Mavericks welcome new and potential season ticket holders at the event
KANSAS CITY MAVERICKS
Kansas City Mavericks