Just for know - rule about game platform is updated for more features and small re-mark for game version if someone will play on reforged and will have problems with it in NWC3L case, think it's not problem to play matches on TFT!
1.6. Game platform. Current game platforn - is official Battle.net server - Northrend (Europe). By agreement of both players it can be another server of Battle.net or NetEase platform.
1.7. Game version. All games must be played on last official version at the time of match start.
As Blizzard promised that classic Warcraft III TFT will not have problmes with cross Warcraft III Reforged.