Document deprecation plan in release notes (#5846)
Document deprecation plan in release notes (#5846)


meln1k/marathon,guenter/marathon,gsantovena/marathon,janisz/marathon,janisz/marathon,gsantovena/marathon,janisz/marathon,gsantovena/marathon,meln1k/marathon,janisz/marathon,meln1k/marathon,gsantovena/marathon,guenter/marathon,mesosphere/marathon,meln1k/marathon,meln1k/marathon,janisz/marathon,guenter/marathon,gsantovena/marathon,mesosphere/marathon,mesosphere/marathon,guenter/marathon,mesosphere/marathon,mesosphere/marathon,guenter/marathon