Technically speaking, the call-ups prior to Tuesday's deadline were "preliminary" in nature. Though none of the teams we're concerned with called up more than just a handful of "extra" players beyond the 23-man maximum allowed by the Euro 2016 regulations. And so, unsurprisingly, all Chelsea players on the preliminary squad lists have made it to the final squads as well.
Here's who we'll get to watch for England, Belgium, and Spain.
Goalkeepers: Joe Hart (Manchester City), Fraser Forster (Southampton), Tom Heaton (Burnley).
Defenders: Gary Cahill (Chelsea), Chris Smalling (Manchester United), John Stones (Everton), Kyle Walker (Tottenham Hotspur), Ryan Bertrand (Southampton), Danny Rose (Tottenham Hotspur), Nathaniel Clyne (Liverpool).
Midfielders: Dele Alli (Tottenham Hotspur), Ross Barkley (Everton), Eric Dier (Tottenham Hotspur), Jordan Henderson (Liverpool), Adam Lallana (Liverpool), James Milner (Liverpool), Raheem Sterling (Manchester City), Jack Wilshere (Arsenal).
Strikers: Wayne Rooney (Manchester United), Harry Kane (Tottenham Hotspur), Jamie Vardy (Leicester City), Daniel Sturridge (Liverpool), Marcus Rashford (Manchester United).
Unlucky Danny Drinkwater misses out in favor of Jack Wilshere, who's played exactly 17 games since the World Cup. LOL. Marcus Rashford's inclusion's a bit hilarious as well — gotta have that flavor of the moment! — but he's unlikely to play much anyway.
Goalkeepers: Thibaut Courtois (Chelsea), Jean-François Gillet (Mechelen), Simon Mignolet (Liverpool).
Defenders: Toby Alderweireld (Tottenham), Laurent Ciman (Montreal Impact), Jason Denayer (Galatasaray), Christian Kabasele (Genk), Jordan Lukaku (Oostende), Thomas Meunier (Club Brugge), Thomas Vermaelen (Barcelona), Jan Vertonghen (Tottenham).
Midfielders: Mousa Dembélé (Tottenham), Marouane Fellaini (Manchester Utd), Radja Nainggolan (Roma), Axel Witsel (Zenit).
Forwards: Michy Batshuayi (Marseille), Christian Benteke (Liverpool), Yannick Carrasco (Atletico), Kevin De Bruyne (Manchester City), Eden Hazard (Chelsea), Romelu Lukaku (Everton), Dries Mertens (Napoli), Divock Origi (Liverpool).
Plenty of current, past (Lukaku, KDB), and future (Nainggolan?) Chelsea representation here. With this much talent on paper, and Captain Eden Hazard to lead them etc etc etc...
Goalkeepers: Iker Casillas (Porto), David de Gea (Manchester United), Sergio Rico (Sevilla).
Defenders: Sergio Ramos (Real Madrid), Gerard Piqué (Barcelona), Jordi Alba (Barcelona), Marc Bartra (Barcelona), Cesar Azpilicueta (Chelsea), Mikel San José (Athletic Club), Juanfran (Atlético Madrid), Héctor Bellerín (Arsenal FC).
Midfielders: Bruno Soriano (Villarreal), Sergio Busquets (Barcelona), Koke (Atlético Madrid), Thiago Alcântara (Bayern), Andrés Iniesta (Barcelona), David Silva (Manchester City), Cesc Fábregas (Chelsea).
Forwards: Aritz Aduriz (Athletic Club), Nolito (Celta Vigo), Álvaro Morata (Juventus), Pedro Rodríguez (Chelsea FC), Lucas Vázquez (Real Madrid).
Arsenal's Hector Bellerin gets the last-minute call thanks to Dani Carvajal's injury in the Champions League final. Unlucky. No Diego Costa of course, due to injury. Hopefully both Azpi and Pedro get some quality playing time; especially the former has tended to be more bench decoration than anything.
Tournament starts in ten days, on June 10. Good luck all!