Cisco WS-4506-E Switch with Supervisor II (EOL, EOS)

Hello,
I have a Distribution/Access Switch Cisco WS-4506-E Switch with Supervisor II (EOL, EOS). when are the exact EOL/EOS dates and can only upgrade the supervisor engine to Supervisor 8?
Thanks

EoS/EoL:  Cisco Catalyst 4003 Chassis, Supervisor Engine I & III

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