After installing 3.10.0 with Website Interface, the ezsite_data database table contains an entry ezwebin '1.0.0'. The used webin extension is version 1.2.0 AFAIK, so this should be corrected.

Unstable php5 has the correct value 1.3.0, but the packages themselves are wrongly versioned as 1.2 while they are 1.3.