Competition changes:
*Chinese Superleague replaces the Korean K League as a playable league (thanks to gio for enabling relegation!).
*Confederations Cup disabled.
*English competitions' fixtures completely rescheduled to largely match modern dates.
*Greek leagues restructured to 14/12 teams.
*Italian competitions' fixtures completely rescheduled to largely match modern dates.
*Italian Serie B restructured to 20 teams.
*Spanish competitions' fixtures completely rescheduled to largely match modern dates.
*World Cup Qualifyng matches are now all played during regular international breaks.

Minor competition changes:
*Asian Cup now takes place in January instead of October (third place game also disabled).
*Copa América now takes place in the correct years (2020, 2024 etc) (invited nations also updated).
*Coupe de Belgique replays removed from the Quarter Final and Final (extra-time and penalties used instead).
*Croatian leagues no longer use playoffs to determine the positions of teams who finish with equal points: they now use head-to-head results followed by goal difference.
*European Championship Qualifying playoff nations changed from England & Scotland to Belgium & Netherlands (playoff draw also changed).
*European continental competitions are now played in the same gameweeks as each other.
*FIFA Club World Cup: fixed a rare bug where the competition would crash during the Semi Final draw (thanks gio!).
*International competitions' host / potential host countries updated.
*Polish Ekstraklasa: points gained by teams in the Group Stage will now not be halved going into the second half of the season (thanks Anoxic!).
*Republic Of Ireland: summer break reduced to prevent hectic post-break schedule (plus some other minor tweaks to competitions' dates).
*Türkiye Kupasi fixtures rescheduled, rounds renamed and all rounds now have two legs where applicable.
*Turkish Süper Lig fixtures slightly rescheduled (to avoid clash with November internationals).
*UEFA Super Cup: substitutes named increased from 7 --> 9.

Gameplay changes:
*Buttons (+ and -) will be much less sensitive to mouse clicks on the transfer bid screen (thanks Nick!).
*Denmark now has its own transfer window (no longer uses Northern Ireland's) - transfer window related items will now appear in your news feed.
*Find Player searches will now display all players with the entered name, not just a few (thanks Nick!).
*Players' physical attributes will now improve with training.
*Regens with high potential abilites should come back with better attributes than before (numerous 20s).
*Sweden now has its own transfer window (no longer uses Norway's) - transfer window related items will now appear in your news feed.

Minor gameplay changes:
*Cádiz CF are now properly linked to their B team (also removed Girona's now non-existant B team).
*Republic of Ireland: annual awards now take place in November, after the domestic season is over.
*Russia: annual awards now take place in May, after the domestic season is over.
*Russia: date for new games started in Russia brought forward by a couple of weeks (Russian FNL will no longer have one game already played).
*Spain: date for new games started in Spain brought forward by a couple of weeks due to earlier opening fixtures.
*Spanish Segunda División B clubs can now sign non-EU players (no match or squad limits).
*TFF 1. & 2. Lig substitutes named reduced from 9 --> 7.
*Turkish clubs now play reserve matches.
*Turkish training period extended by two weeks until June 3rd to cover the Turkish 2. Lig Playoff fixtures.

Display changes:
*First language of players & staff from Bosnia, Mongolia, South Africa & Ukraine is now their native language.
*match_eng errors (occurs when a team selects less than 11 players) will now tell you exactly which team is at fault.

Known issues introduced in v8:
*Awards In Ireland and Russia seem to stop a few months before the end of the season (bug actually introduced in v7).
*FIFA Club World Cup: European and South American teams may now potentially meet in the Semi Final (they are kept separate IRL).
*La Liga teams will play matches on Christmas Day in some years.
*World Cup South American qualifying sometimes awarded extra qualifying spot, rendering their playoff vs an Oceanic team meaningless.