What hubs are you looking at? You can upgrade some rear hubs from 10- to 11-speed but it's usually a case of a new axle and freehub body, which isn't cheap, especially if it's a Chris King or something.
As an example, Chris King 'classic' road hubs can be converted from 130 to 135 whereas the R45 road hubs can't - but the R45 has the drive side flange further out from the centre line, theoretically making for a stronger wheel due to the better bracing angles.
@Regal
What hubs are you looking at? You can upgrade some rear hubs from 10- to 11-speed but it's usually a case of a new axle and freehub body, which isn't cheap, especially if it's a Chris King or something.
As an example, Chris King 'classic' road hubs can be converted from 130 to 135 whereas the R45 road hubs can't - but the R45 has the drive side flange further out from the centre line, theoretically making for a stronger wheel due to the better bracing angles.