OZ7IT (853km) was spotting my 1W ERP 6m WSPR at 0658z this morning. I assume this is Es, but early.
UPDATE 0900z: Steve VE7SL has suggested I monitor JT65 on 6m instead of WSPR as activity levels are higher. I am seriously considering this.
UPDATE 1002z: Lots of 10m WSPR spots from stations in Scandinavia this morning. Nothing more on 6m WSPR.