I had missed this before, but in June, Indridi Indridason posted about the Icelandic Constitutional Council’s proposals for the country’s new electoral system. He notes that the proposal is rather vague in critical respects (and I understand it remains so even now), but broadly:
the proposal stipulates that 63 members will be elected from eight or fewer districts and that voters can either vote for a party list or individual candidates. If the voters opt for voting for individual candidates they are allowed to distribute their votes across candidates of different parties and are free to vote candidate running in any district (if there is more than one district). The electoral law can require up to 2/5 of the seats in parliament to be elected from district lists (rather than a national list).