He misses out officially and I've seen a lot of meltdowns due to it on twitter earlier.
I know people are mad about but it's pretty simple why he wasn't called up. It's because he doesn't offer anything different to the likes of Carvajal, Odriozola and Azpilicueta and it's the same in the Midfield for Spain he's not anywhere near as good as the starters and the second string CM players.
at RB it was his best shot but Carvajal provides both going forward and defending, Odriozola is much better going forward than Roberto and Azpilicueta is a far superior defender who can play in all positions in the back line when needed same with Nacho.
Tough luck for Bob though since he did have a great first half to the season but it is what it is I guess.