Did GameOn manufacture the chips & Icon distributed/sold them to the Cromwell? Hence, the "I" logo on the Cromwell chips?
(The "I" logo also on the new Downtown Grand chips, I see).

Otherwise, how does the logo relate to the GameOn name?

It does appear that the new chips are some of the new "Platinum Series" chips shown on GameOn's webpage -- see middle chip from the partial screen grab below.