Zwift hub cassette matching bike

Hey. I just ordered my zwift hub with 10 speed cassette. My bike have 10 speed 12-27 tooth. I red zwift hub comes with 11-28 tooth cassette. Will there be any problem? Will I need new chain or 1 teeth wont make big difference? Thanks for advice.

It’ll make not a jot of difference. The tolerances on your chain mean it’ll cover both the smaller and larger cogs.